Seven people were shot and killed today at a Sikh temple in Oak Creek, Wis., in what officials are treating as a case of domestic terrorism.
Three other people -- two adult male civilians and a male police officer -- were in critical condition and were being treated at a local hospital, according to the hospital.
The apparent gunman was shot and killed in an exchange of gunfire with the wounded police officer outside the temple and was one of the seven dead.
"The officer stopped a tragic event that could've been a lot worse," Oak Creek Police Chief John Edwards told reporters.
Four people were found dead inside the temple and two others were found dead outside the building.
Edwards said authorities were treating the event as a domestic terrorism incident and the FBI would be conducting a full investigation.
This evening, the FBI and a bomb squad arrived at a home in Cudahy, Wis., near Oak Creek, and ABC News Milwaukee affiliate WISN reported the action appeared to be related to the temple shootings earlier in the day.
In addition, authorities were trying to trace a single, semiautomatic handgun recovered at the scene, sources told ABC News.
Individuals attending Sunday services at the Sikh Temple of Wisconsin, just south of Milwaukee, fled in all directions this morning when a gunman entered and began firing. Many hid in bathrooms or other rooms within the temple while the shooter attacked, according to police.
