Police in Oak Creek say seven people have been killed at the Sikh Temple, off Howell Avenue.
Four people were reportedly killed inside and three outside - including a suspect. Police say an officer "took down" a suspect, with the officer also being injured, but his wounds are not thought to be life-threatening.
Shots were reported at 10:30 Sunday morning.
WUWM's LaToya Dennis reports on the first press briefing police held at 1:30 p.m.