Police said it all started when the suspect dropped off a stabbing victim at 10 a.m. Friday at Community Hospital.
He pulled a gun on the security guard, carjacked someone in the parking lot and took off, according to authorities.
Police said he carried out a second carjacking in Victorville.
He carjacked a third victim in Mesquite, Nevada and was finally arrested in Utah. Police said he surrendered peacefully.