The Security Council created, with effect from 16 January 1998, a support group of 180 police observers for a single period of nine months to oversee the police in the Danube region in the northeast of Croatia near the border with Serbia and Montenegro.[2] The observers would specifically monitor the return of displaced persons, and assume responsibility for all UNTAES personnel and assets for the completion of its mandate. Finally, the resolution concluded by requiring the Secretary-General Kofi Annan to report on the situation by 15 June 1998.