Five people were inside a home including, a four-year-old boy and a pregnant woman, when several suspects forced their way in through a rear stairwell door.
Lt. Craig McGuire says the deputies found the suspect sitting on the floor, mumbling incoherently and smelling of alcohol.
Police say Adis Mujakic, 19, Abbas Khliqad, 17, and a third juvenile broke into a home in the 3600 block of Buckley Road last Friday.
Police are warning residents to not automatically trust a stranger in uniform after a home invasion that left a woman taped to her stove.
Two Kansas City men have been charged in a home invasion that left a University of Missouri-Kansas City music student dead and three others wounded.
St. Louis police are investigating two overnight home invasions where the residents were injured.
Police say the 33-year-old male suspect is in critical condition.
Officials say three men wearing ski-masks and armed with guns knocked on an apartment door about 2 a.m. in the 3900 block of north Florissant.
The most recent happened overnight in the 200 block of Grampion near Chain of Rocks Park.
The suspects in both cases remain at large.