TULSA - Four people were treated Wednesday afternoon after a shooting near the Tulsa County Courthouse.
Tulsa police and Tulsa County sheriff's deputies responded to the scene at 500 S. Denver Ave. around 2:30 p.m.
Officials say Andrew Joseph Dennehy, 23, of Tulsa, is believed to have opened fire.
Dennehy fired multiple shots into the air across the street from the plaza between Central Library and the courthouse, according to TPD officials.
He then sat on a cement bench at the plaza. Three deputies arrived on the scene seconds later and exchanged fire with Dennehy.
One deputy was shot in the hand, says Sgt. Dave Walker of the TPD.
Walker says the deputy is in serious condition with non-life-threatening injuries.
Deputies fired a total of five rounds at Dennehy, striking him in the face and body.
He was taken into surgery and was in critical condition as of Wednesday night.
During the exchange, a stray bullet fired from deputies hit an bystander standing inside the library's south entrance, according to police.
He is in fair condition.
A fourth person was treated at the scene, but she was not physically injured.
Dennehy pleaded guilty to carrying a firearm while under the influence in 2007 and to public intoxication in 2010.