By Kristen Johanson

PHILADELPHIA (CBS) — Philadelphia police are investigating the actions of one of their own, following a chase in West Philadelphia earlier this week.

Basil Harrison, 21, faces assault, robbery, gun and carjacking charges and remains hospitalized, after authorities say he stole cash from a deli and was injured in a police-involved shooting.

The incident happened around 9:30 a.m. on Tuesday, when officers responded to the robbery at 52nd and Walnut Streets.

A short time later, officials say officers spotted an SUV matching the description of the getaway car about a half-mile from the deli.

The driver took off, and police began to pursue the car, until they say, the SUV hit a sedan, and an officer’s unmarked police car.

Investigators say that’s when a cop ordered the driver to put up his hands, and when he didn’t, the officer fired, and struck Harrison once in the chest.

Harrison was taken to Penn Presbyterian and is listed in critical, but stable, condition.

No one else was injured.

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