TONOPAH, Ariz. — The Latest on a rest area shooing on Interstate 10 in western Arizona (all times local):

9 a.m.

Authorities say a homicide suspect is gravely wounded after exchanging gunfire with law enforcement officers at a western Arizona rest area along Interstate 10.

The incident closed a 36-mile (58-kilometer) stretch of westbound I-10 in western Arizona for hours Tuesday morning.

The Arizona Department of Public Safety says the gunfire occurred after a trooper encountered the homicide suspect in a rest area after coming upon a trucker who had suffered minor injuries when shots were fired at his big rig.

DPS Capt. Tony Mapp says it’s not immediately known whether officers’ gunfire injured the suspect or whether he shot himself.

A helicopter flew the suspect to a Phoenix-area hospital and DPS spokesman Bart Graves says he had life-threatening injuries.

Phoenix police identified the suspect as 36-year-old Sladjan Petkovic and said Petkovic had an ongoing dispute with a man fatally shot Monday evening, 45-year-old Stephen and Arvallo (ahr-VYE’-yoh).

8:25 a.m.

The Arizona Department of Public says an injured suspect is in custody after exchanging gunfire with police officers at an Interstate 10 rest area and an earlier shooting along I-10 during which a trucker suffered apparently minor injuries.

The incident closed a 36-mile (58-kilometer) stretch of westbound I-10 in western Arizona for hours Tuesday morning.

DPS Capt. Tony Mapp says the condition of the wounded suspect isn’t immediately available and that it’s not immediately known whether he shot himself or was wounded by officers.

Mapp says a trooper looking for a person sought in a Phoenix shooting came upon the trucker, who reported being shot at and suffering minor injuries from metal fragments or glass.

According to Mapp, the exchange of gunfire occurred when the trooper then encountered the suspect outside a SUV at a nearby rest area.

6:45 a.m.

Authorities say a “police situation” that has closed part of westbound I-10 in western Arizona involved a standoff between a suspect and police officers.

Arizona Department of Public Safety spokesman Bart Graves says the Tuesday morning situation occurred at a rest area and involved “a suspect engaged with police officers.”

Graves said he couldn’t provide additional information, including whether the suspect was in custody or whether there were any injuries.

The Arizona Department of Transportation says westbound traffic is being detoured around the closure by exiting westbound I-10 at Salome Road at Milepost 81 and then returning to I-10 at Milepost 45 via U.S. 60 and Vicksburg Road.

ADOT says eastbound I-10 is open.

6:35 a.m.

Westbound Interstate 10 is closed in western Arizona because of what authorities are describing as a “police situation.”

The Arizona Department of Transportation says the Tuesday morning closure involves 36 miles of westbound I-10, the main connection between Phoenix and Los Angeles.

The Arizona Department of Public Safety says did not immediately respond to a request for information about the incident. Media outlets report that the incident is or near a rest area.

ADOT says westbound traffic is being detoured around the closure by exiting westbound I-10 at Salome Road at Milepost 81 and then returning to I-10 at Milepost 45 via U.S. 60 and Vicksburg Road.

ADOT says eastbound I-10 is open.