NORMAN, Okla. (AP) -- One person was killed in an explosion in a traffic circle about 100 yards from a packed football stadium at the University of Oklahoma on Saturday night in what authorities were calling a suicide.

"We are apparently dealing with an individual suicide, which is under full investigation," OU President David Boren said in a statement.

There were no other reports of injuries. There was no word on the identity or sex of the person who died.

The loud noise of the explosion could be heard clearly inside Oklahoma Memorial Stadium, where 84,000 people were watching the Oklahoma Sooners play Kansas State.

Officers cordoned off an area west of the stadium, known as the South Oval, and nobody was allowed out of the stadium immediately after the blast, which occurred shortly before 8 p.m. People were allowed out of the stadium about 8:30 p.m.

A police bomb squad detonated explosives found at the site of the blast. The detonation could also be heard in the stadium area. The area near the stadium was searched by bomb dogs.

"At no time was anyone in the stadium in danger," Boren said.

Kerry Pettingill, Oklahoma homeland security director, said the incident was under criminal investigation and the motive behind the explosion was not known.

One hates to speculate, but blowing yourself up in or near a crowded public venue is certainly not a typical method employed by those seeking to simply destroy themselves.

Update:

An extensive amoung of coverage here, including links between Al Qaeda and the Oklahoma area.

This thing is looking more and more like an attempted terror attack regardless of whether or not extreme Islam is involved. It seems odd to me that the media coverage of it, to this point, has been relatively sparse. They certainly don't shy away from reporting suicide bombing attacks in the middle east.

Update:

They've identified the bomber:

A University of Oklahoma student was identified Sunday as the person who was killed in an explosion near a packed football stadium, authorities said Sunday.

The body is believed to be that of Joel Henry Hinrichs III, 21, according to a news release from Salvador Hernandez, special agent in charge of the FBI in Oklahoma. A student telephone book lists Hinrichs with a permanent address in Colorado Springs, Colo.

A quick Google search for Mr. Hinrichs revealed that he is possibly (name and city match) the patent holder (registered in 2003) of some sort of processor/integrated circuit device.