Bethany police spotted and followed a driver who matched a description of the shooter. The man, later identified by police as Clark, crashed his car and was taken into custody.
Police linked Clark to the July convenience store slaying after a woman called officers Thursday and said he looked like a photo of the killer she saw on television, according to an affidavit filed Friday in Oklahoma County District Court.
Tests done on .40-caliber bullet casings found at both shooting scenes indicated they were fired from the same pistol, according to the affidavit.
Police recovered a .357-caliber Magnum handgun in Clark's car thought to have been owned by Hajimirzaei, according to court papers.
CONTRIBUTING: STAFF WRITER MICHAEL MCNUTT