An Arizona teenager is believed to have killed one person during a drive-by shooting spree that injured several others earlier this week.

Ashin Tricarico, 19, stands accused of firing on multiple vehicles and pedestrians during a 90-minute rampage across three different cities in the greater Phoenix, Arizona metropolitan area on Thursday night.

Ashin Tricarico

Some twelve people were injured during eight shooting incidents, authorities say. Four people were directly shot by rifle fire–causing one man to veer his pickup truck into a canal next to a freeway.

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According to local NBC affiliate KPNX, the defendant admitted to two of the eight shooting incidents but clammed up when asked about whether he was involved in the incident where the 56-year-old died. {snip}

The defendant’s partial confession, however, appears to be predicated on a belief that he is constantly being followed by shooters in the streets of Arizona who are intent on taking him out over an earlier shooting incident from early May in which he shot a customer while working as a licensed and armed security guard at a restaurant.

“Ashin thinks every vehicle and person he drives past is pointing a gun at him,” court documents obtained by ABC News allege.

The Phoenix Police Department, in a statement, noted that Tricarico “was asked to deal with a male customer who was reportedly intoxicated and causing a disturbance.”

That customer allegedly charged at Tricarico after he was confronted over his behavior while police were on the way. The security guard turned defendant then fired and struck the allegedly belligerent drunk and wounded him with a non-life-threatening injury. Tricarico claimed self-defense, and the incident is still under investigation.

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