Busije is a sub-neighborhood of Ugrinovci, the only separate settlement in the municipality (urban section of Zemun is administratively part of the Belgrade proper).

Just like the other similar settlement, Grmovac, origins of Busije (Serbian for 'ambush') date from 1997[1] when the Zemun's municipal leadership decided to sell empty lots to the refugees from Croatia who were forced out after the Operation Storm in 1995.

Prices were relatively low and many people bought the land, regardless of the fact that area has not been designated for urban development and the lack of any infrastructure.

By 2017 number of houses reached 2,000 and population has been estimated between 5,000[2] and 7,000,[3] out of which 80-90 % make refugees from Croatia and Bosnia and Herzegovina.

Proper road were built in 2006, followed soon by the ambulance, Serbian Orthodox Church of Saints Cyril and Methodius and urban transportation line 702.