MISSION VIEJO, Calif.—A 29-year-old Santa Ana man was behind bars Nov. 22 on suspicion of attempted murder in the stabbing of an Amazon employee in Mission Viejo.

Andrew Ariel Alfaro, who worked for a third-party delivery service partner for Amazon, is accused of stabbing an Amazon employee at its warehouse in Mission Viejo Tuesday morning.

Orange County sheriff’s deputies were dispatched at 9:32 a.m. to the warehouse at 25725 Jeronimo Road regarding the stabbing, according to Orange County Sheriff’s Sgt. Michael Woodroof.

The 48-year-old woman remained in critical condition Wednesday, Mr. Woodroof said.

The suspect was taken to a hospital to be treated for cuts.

It was unclear what prompted the attack or how the two were acquainted.