WATCH: Wisconsin authorities conduct controlled detonation of explosives found in apartment

BEAVER DAM, Wiss. (KSFY) - Wisconsin authorities conducted a controlled detonation Wednesday afternoon to destroy explosives inside an apartment.

Photo and video courtesy of WMTV

WMTV reports a man in his 20s was killed in a blast there on Monday.

Police found highly volatile homemade explosives inside. Authorities said police would be at risk moving them out, leading to the controlled detonation.

Residents in the surrounding apartments were evacuated on Monday and will be able to return Wednesday night or Thursday morning.

The controlled detonation did not cause as much damage as experts anticipated.

The FBI and ATF are investigating.