PHOENIX (AP) -- The latest developments on a series of freeway shootings in the Phoenix area. All times local:

12:45 p.m.

A man who was getting coffee near a convenience store where two people were detained for questioning in a string of Phoenix freeway shootings says he watched as law officers swarmed the area.

Marco Mansilla says he was getting coffee Friday at a McDonald's connected to the convenience store when the parking lot filled with patrol cars. He says officers advised him to temporarily stay inside.

Once he left to head back to his window-tinting business across the street, Mansilla says he saw a man sitting inside a police car. A woman was handcuffed and standing beside a police car with four officers.

Arizona Department of Public Safety spokesman Bart Graves confirmed the man and woman were detained for questioning but says only the man is of interest to investigators. He says authorities seized their SUV and will examine it for evidence.

Eleven cars have been shot since Aug. 29, eight with bullets and three with projectiles that could include BBs or pellets.

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12:15 p.m.

The Arizona Department of Public Safety says investigators are focusing on one of two people detained for questioning in a string of Phoenix freeway shootings.

The man and woman were in an SUV when they were detained Friday at a convenience store near Interstate 10. However, department spokesman Bart Graves now says only the man is of interest to investigators.

Graves says the man hasn't been arrested, but questioning could continue for hours. He had no information on the woman's status.

Eleven cars have been shot since Aug. 29, eight with bullets and three with projectiles that could include BBs or pellets. The shootings have rattled residents and led to an intensive search for suspects.

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11:50 a.m.

Authorities who are questioning two people in a string of Phoenix freeway shootings also seized their vehicle.

Arizona Department of Public Safety spokesman Bart Graves says the two were detained Friday, but he didn't have additional details.

He says authorities also seized their white Chevrolet Tahoe and will examine it for any evidence that might connect it to the shootings. Police focused on the SUV at a convenience store near Interstate 10.

Eleven cars have been shot since Aug. 29, eight with bullets and three with projectiles that could include BBs or pellets. The shootings have rattled residents and led to an intensive search for suspects.

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10:50 a.m.

Authorities are questioning two people in a string of freeway shootings that have rattled Phoenix over the past two weeks.

Arizona Department of Public Safety spokesman Bart Graves confirms the people are being questioning but doesn't have additional details.

Police on Friday were at a convenience store near Interstate 10, focusing on a white SUV.

Eleven cars have been shot since Aug. 29, eight with bullets and three with projectiles that could include BBs or pellets.

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7:26 a.m.

Arizona state police say they can't confirm that shots were fired from one vehicle at another on a Phoenix freeway Friday morning.

Department of Public Safety spokesman Bart Graves says there's no physical evidence corroborating a motorist's report of hearing at least one gunshot.

Television station KNXV earlier reported that DPS vehicles were seen with a red car stopped alongside Interstate 17 in central Phoenix and that the car was then escorted to a secure area at the agency's nearby headquarters.

Authorities have confirmed that 11 vehicles have been shot at in the Phoenix area, with most of them occurring on freeways.

The 11th incident occurred Thursday morning when authorities found a bullet hole in a commercial truck.

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6:39 a.m.

Arizona state police are investigating a report of possible shots being fired on a Phoenix freeway.

The state Department of Public Safety says shots were reportedly fired from one vehicle at another Friday morning but that nothing has been confirmed at this point.

No additional information was released and circumstances of the possible shooting aren't known.

Television station KNXV earlier reported that DPS vehicles were seen with a red car stopped alongside Interstate 17 in central Phoenix and that the car was then escorted to a secure area at the agency's nearby headquarters.

Authorities have confirmed that 11 vehicles have been shot at in the Phoenix area, with most of them occurring on freeways.

The 11th incident occurred Thursday morning when authorities found a bullet hole in a commercial truck.