A felony arrest warrant was issued Monday for a second man in connection to an armed robbery and stabbing at Chariot Pizza Sept. 1.
Robbery detectives obtained the warrant for David Ryan Howe, 35, according to a post on Tucson Police Department's Facebook page.
Investigators said Howe is considered armed and dangerous, and should not be approached.
Anyone with information on his whereabouts is asked to call 911.
On Sept. 4, police arrested Alex Joseph Haider, 18, in the robbery and stabbing at the pizza restaurant at 3930 N. Flowing Wells Road.
Haider was booked on suspicion of attempted armed robbery, aggravated robbery, aggravated assault with a weapon, kidnapping and an unrelated warrant.
Officers responded to a call from Chariot just before 11 p.m. on Sept. 1, police said. They found a man, who worked at the restaurant, with stab wounds. He was taken by Tucson Fire Department paramedics to Banner-University Medical Center Tucson with non-life-threatening injuries.
Another worker was treated on the scene for a substance that was sprayed into his eyes.
The pizza restaurant was closed and the two employees were cleaning up when two men entered through an unlocked back door. One sprayed what appeared to be pepper spray in the face of one of the employees and chased the other one, police said.
The second employee was stabbed multiple times and stomped on during a struggle, authorities said.
After multiple tips following media reports, Haider turned himself in to police.
