An unidentified man suspected in the Boston Marathon bombings on Monday died after a frantic crime spree late Thursday night and early Friday morning. His accomplice is currently at large, and considered armed and dangerous.

At a press conference early Friday, Boston police officers confirmed that the pair are believed to be the same men wanted in connection with the Boston Marathon bombings.

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On Thursday evening, around 10:20 p.m., an MIT police officer was responding to a disturbance on campus when he was shot multiple times by two suspects, Middlesex Acting District Attorney Michael Pelgro, Cambridge Police Commissioner Robert Haas and MIT Police Chief John DiFava announced.

The officer later died at Massachusetts General Hospital. His name has not yet been made public.

Soon after the shooting at MIT, police received reports of an armed carjacking in Cambridge by two males.

The victim was reportedly jumped by the suspects, and kept in the car for about 30 minutes. After being released at a Cambridge gas station, unharmed, the suspects drove away.

The search for that vehicle led police to Watertown, Mass. When the car was sighted near the intersection of Dexter and Laurel, the suspects allegedly threw explosives into the street and engaged officers in a firefight.

During this pursuit, an MBTA police officer was seriously injured, The Boston Globe reported. According to WCVB, he is currently in critical condition.

One of the suspects was also critically injured. He was taken to an area hospital, and was later pronounced dead.

Police are still searching Watertown for the second suspect, who is considered armed and dangerous:

A Massachusetts State Police public information officer told HuffPost reporter Michael McLaughlin, “We believe this to be a terrorist, we believe he came here to kill people.”

Residents have been ordered to remain in their homes as the manhunt continues.

This is a developing story….

Related on HuffPost:

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  • Police Search For Suspect

    A police officer with gun drawn searches for a suspect on April 19, 2013 in Watertown, Massachusetts. Earlier, a Massachusetts Institute of Technology campus police officer was shot and killed late Thursday night at the school’s campus in Cambridge. A short time later, police reported exchanging gunfire with alleged carjackers in Watertown, a city near Cambridge. It’s not clear whether the shootings are related or whether either are related to the Boston Marathon bombing.

  • Man Taken Into Custody

    Man being taken into custody on Nichols Ave and Quimby. Police overheard saying “he has shit all in his pockets.”

  • Cops In Bullet Proof Vests

    Cops suiting up with bullet proof vests in Watertown.

  • Reports Of Shooting, Explosions In Watertown

    A vehicle carrying officers in tactical gear arrives at the Watertown neighborhood of Boston, Friday, April 19, 2013. Dozens of officers and National Guard members are in Watertown, where television outlets report that gunfire and explosions have been heard.

  • Officers Arrive In Watertown

    Officers wearing tactical gear arrive at the Watertown neighborhood of Boston, Friday, April 19, 2013.

  • FBI On Scene In Watertown

    An FBI official arrives at the Watertown neighborhood of Boston, Friday, April 19, 2013.

  • Raw Shooting at MIT Watertown

    A NewsCenter 5 viewer sent in uncut video of a shootout between police and at least one suspect in the streets of Watertown, Mass.

  • Police Establishing Perimeter

    Boston Police are setting up perimeter tape across Nichols Avenue right now.

  • Confrontation In Watertown

    Boston Police chief on the scene in Boston’s Watertown neighborhood.

  • Christina Wilkie Reports From Watertown

  • FBI Agents Arrive In Watertown

    A half-dozen FBI agents just arrived at the Nichols Ave perimeter. At least one in a bulletproof vest.

  • Michael McLaughlin Reports From Watertown

  • Christina Wilkie Reports From Watertown

  • Police Surround Apartment In Watertown

    A heavily armored bearcat turns onto Quimby Street, headed towards the apartment.

  • Police Search For Suspect

    Police with guns drawn search for a suspect on April 19, 2013 in Watertown, Massachusetts.


LIVE UPDATES

From the Associated Press:

WASHINGTON (AP) — Surviving Boston bomb suspect identified as Dzhokhar A. Tsarnaev, 19, of Cambridge, Mass.

Read more here.

As public safety concerns continue in the Boston area, WHDH-TV has compiled a list of all the local schools that are closed. Included are public and private schools, as well as colleges and day care centers.

The President continued to be briefed overnight by Assistant to the President for Homeland Security and Counterterrorism Lisa Monaco about developments in the investigation as well as the events in Boston and Watertown, MA.

WATERTOWN — Police this morning are searching a 20-block area here for one of the Boston Marathon bombing suspects after a violent night during which an MIT Police officer lost his life and a Transit Police officer was seriously wounded in a firefight. The other Boston Marathon bombing suspect, who was wearing a black hat in photos released Thursday evening, is dead after firing bullets and launching explosives at police.

Read more here.

The Boston Police Department continued issuing warnings to residents early Friday morning to stay indoors and not answer doors unless to identified officers.

The speakers told the community, “We need your help now.”

They also noted, “No vehicle traffic is going to be allowed to travel in and out of Watertown.”

“This situation is grave,” an officer stated, “we are here to protect public safety in these neighborhoods.”

MIT posted to its website a letter sent to the school community this morning by MIT Executive Vice President and Treasurer Israel Ruiz and Chancellor Eric Grimson. According to the letter, classes have been cancelled today in light of the recent tragedy.

A portion of the letter reads:

While the circumstances around the officer’s death remain the subject of an active investigation, what is certain is that the officer gave his life to defend the peace of our campus. His sacrifice will never be forgotten by the Institute. We are thinking now of his family, and our hearts are heavy.

In consultation with faculty chair Sam Allen, we have decided to cancel classes today (Friday). All employees are encouraged to use their best judgment about whether they are prepared to come in to work today: any absence today will be considered excused.

The letter continues to say that MIT is working to plan a gathering today, and President Reif is currently returning from international travel.

Read the full letter here.

At a press conference at Beth Israel Hospital early Friday morning, staff stated there were 12 victims from the initial event hospitalized, one in serious condition.

One patient, it was confirmed, was brought in with a police guard, but no other identifying details were given.

The hospital also confirmed there was a deceased suspect, but only stated it was an “adult male.” As for cause of death, hospital staff said it seemed to be a “combination of blasts, potentially gun shot wounds.”

arsenal st mall watertown

Credit: Michael McLaughlin, The Huffington Post

At the early Friday morning press conference, Boston police officers linked several crimes: the shooting of a police officer at MIT, followed by a carjacking, followed by a shootout.

The suspects are believed to be the same suspects in the Boston Marathon bombings.

A Massachusetts State Police public information officer told HuffPost reporter Michael McLaughlin, “We believe this to be a terrorist, we believe he came here to kill people.”

Residents are continually urged to stay indoors.

“This is a terrible tragedy, we don’t want to increase it,” Boston PD stated.

Boston PD report they are looking for Suspect #2.

At the press conference, police reported suspect is in a gray hoody sweatshirt, a Caucasian male with long, curly brown hair.

Transit officer, second officer struck.

PD advise residents: Shelter in place. Do not leave homes. Call 911 if you see something suspicious.

“We are in public safety mode, our immediate concern is for those people up there.”

Suspect should be considered “armed and dangerous.”