At least one gunman opened fire during morning services at a Sikh temple in Oak Creek, Wisconsin, and remained on the loose inside the temple, possibly holding hostages, according to witnesses.
Police, ambulances and the fire department were on the scene at the temple.
The dispatcher for Oak Creek Fire Department said first reports of the shooting came in about 10:30am local time.
Two witnesses said the shooter or shooters were still inside the building.
More top news
A sailor has been rescued after two months lost at sea, during which he was forced to eat seagulls for survival.
Former Leicester City and England striker Frank Worthington is suffering from Alzheimer's disease, according to his daughter.
This is the sight that greeted one environmental conservationist - a deer with its head stuck in a light globe.