Four suspected Daesh members were arrested in Morocco for plotting terrorist attacks in the kingdom’s largest city of Casablanca, the Interior Ministry said Tuesday.

“They plotted dangerous terrorist attacks against the stability and security of the Kingdom,” the ministry said in a statement, cited by the Le Matin newspaper.

The suspects, who are said to have pledged allegiance to Daesh, planned attacks on Casablanca’s “vital sites,” the ministry specified.

Daesh, a terrorist group outlawed in Russia and many other states, controls large territories in Syria and Iraq, expanding its influence to other countries in the Middle East and North Africa. According to the security experts, hundreds of militants from Morocco have joined the radical group with some threatening to return to the country and carry out attacks.