A suspect being sought in a Norman double homicide was on his stomach with a gun in a rural Pottawatomie County field early Wednesday morning when he reportedly shot himself in the head as authorities surrounded him during a manhunt.

A suspect being sought in a Norman double homicide was on his stomach with a gun in a rural Pottawatomie County field early Wednesday morning when he reportedly shot himself in the head as authorities surrounded him during a manhunt.

Pottawatomie County Undersheriff Travis Palmer said the man, believed to be Timothy Michael Deffner, 55, shot and killed himself after being surrounded by officers on the ground ordering him to surrender while a police helicopter also hovered above.

All indications point to the deceased being Deffner, but Palmer said a positive identification will be confirmed by the state medical examiner. His death ended a tense morning manhunt that unfolded with a multi-agency law enforcement presence in rural Tecumseh that also included officers providing safety and security escorts for some school buses on their morning routes.

Palmer said Norman police broadcasted an alert overnight about a suspect vehicle connected to a double homicide in that city. About 3 a.m., Pottawatomie County sheriff's deputies received a call about a vehicle matching that description being abandoned in the middle of Highland Road, which is west of Bethel Road and about 3 miles south of SH 9 in the Tecumseh area.

Deputies and tribal police responded and found the tag on the vehicle matched the one sought from Norman. Knowing the suspect, who was said to be armed with a rifle and dangerous, could be anywhere in the area, Palmer said additional units and day shift personnel were called to the scene for a manhunt.

Authorities from numerous police agencies, including Citizen Potawatomi Nation, Tecumseh, McLoud, Absentee Shawnee and the Oklahoma Highway Patrol, responded as a 3-square mile perimeter was set up, he said. The Pottawatomie County Tracking Team and District 23 trackers also were called in and ready.

“Because of darkness, we held the perimeter until daybreak,” Palmer said, when an OHP helicopter also would be available to assist from the air.

About 7:30 a.m., the search commenced, and with a large tracking team in place, a person was spotted about 80 yards into a field. Palmer said the man was laying on his stomach and had a gun. As authorities surrounded him, they heard the gunshot, Palmer said, and the man was found with a fatal gunshot wound to the head.

The firearm found at the scene was the same caliber used at both murder scenes in Norman, Palmer said.

Norman police said Deffner was wanted in the Tuesday night shooting deaths of his estranged wife, 49-year-old Cayann Patterson, and her attorney, 47-year-old Bryan Young. Palmer said Young's wife and young child were in the home when the attorney, a former Norman North Principal, was killed.

Police believe Deffner went to Young's home and shot him and also went to Patterson's home and shot her, then set fire to the home, but authorities aren't sure which murder happened first since both were in such as short time span.

While they're not sure exactly why Deffner was out in rural Pottawatomie County, Palmer said authorities think he may have been going to Shawnee to kill a third person and he possibly had trouble with his vehicle or ran out of gas in rural Tecumseh.

Palmer said authorities did check other residences in that area to make sure everyone was safe.

The undersheriff said the scenario that played out was a dangerous situation for police as the suspect could have shot at them at any moment from his location.

In case he forgot to mention them all, Palmer thanked all agencies involved in the effort and said Norman police also sent a crime scene crew to Pottawatomie County's scene.