The attackers reportedly told everyone to leave the building before they occupied it. They went up to the seventh floor, where they broke the glasses of two windows and flew a Turkish flag with a sword sign on it.

According to police transmitters, gun shots could be heard after the men entered the building and called for a negotiator while they were inside.

It was reported that police units have been deployed and the roads in front of the building have been closed as a security measure.

An ambulance was also waiting at the scene in case of an emergency.

No casualties were reported.

The incident comes a day after Mehmet Selim Kiraz, the Turkish prosecutor was held as hostage and killed by outlawed DHKP-C terrorists on Tuesday in Istanbul’s Çağlayan Courthouse.