PHILADELPHIA (AP) — Philadelphia police say a drive-by shooting has left two people seriously injured.

WPVI-TV reports the shooting happened around 7 p.m. Wednesday. Police say five people were sitting on a porch when a white SUV drove by and opened fire.

An 18-year-old woman was shot twice in the stomach. A 20-year-old man was shot in the arm and chest. Both victims were taken to Einstein Medical Center where they're listed in critical condition.

No arrests have been made.

Philadelphia Police Chief Inspector Scott Small says a motive is unclear.

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Information from: WPVI-TV, http://www.6abc.com