Early reports said there were multiple=

At least three victims have been admitted to the hospital in critical condition. A police officer who responded to the 911 call was assisting a victim when he was ambushed by the gunman and shot multiple times before another officer shot and killed the gunman. The wounded officer, a 20-year veteran, is expected to recover.

The gunman and has yet to be identified, according to CNN. 

"We are treating this as a domestic terrorist-type situation," Police Chief John Edwards said in a press conference Sunday afternoon.

Law enforcement swept the parking lot trying to locate the gunman's car in order to learn his identity. Officers also conducted a search of a wooded area adjacent to the gudwara.

Governor Scott Walker issued a statement which expressed gratitude to the first responders for their "bravery and selflessness."

"Our hearts go out to the victims and their families, as we all struggle to comprehend the evil that begets this terrible violence," Gov. Walker said. 

Four bodies were found inside in the gudwara while three bodies were found outside, including the alleged shooter, CBS reported. The shooting occured shortly after 10 a.m. when many women and children were present to prepare a communal meal.

Mitt Romney and President Obama both issued statements offering condolences.

"This was a senseless act of violence and a tragedy that should never befall any house of worship," Romney said. 

Obama urged citizens to be "reminded how much our country has been enriched by Sikhs, who are a part of our broader American family.”

From earlier today:

Several people have been injured in a shooting at a Sikh temple about 20 miles south of Milwaukee, Wisconsin, the Milwaukee Journal-Sentinel reported.  

Two men have been admitted to Froedtert hospital, a hospital spokeswoman said. One is in critical condition in the surgical intensive care unit; the other has been sent to an operating room,  CNN reported. 

Reuters reported that the dispatcher for Oak Creek Fire Department said first reports of the shooting came in about 10:30 a.m. local time (11.30 a.m. EDT).

 "We do have a shooting," she said. "Our whole department is out there, and others as well." She did not have details on any possible victims.

There are reports that the head priest was locked inside a restroom with a cell phone and said there were as many as 30 victims in temple, USA Today reported.

CNN is reporting that the shooter is at large.

Read the full story at CNN here, Reuters here, USA Today here and Milwaukee Journal-Sentinel here.

Reach Reporter Jackie Mansky here or Dawn Megli here.