Two men were injured as shooters fired "massive amounts of bullets" from two cars into a party bus as it dropped off passengers early Monday morning in Highland Park, police spokeswoman Marli Blackman said.

One car hit the party bus, which was parked on Monterey near 2nd Avenue, and "then began to spray the party bus with bullets," she said. Passengers fled, and one of the men is in critical condition; the other's condition isn't immediately available.

Police are investigating scenes at an alley and nearby laundromat, as the shooters apparently chased people fleeing the bus, Blackman said. Before the shooting, the party bus group had been celebrating a birthday at Burn Hookah Bar in Southfield.

Two women, in their 20s, got into an argument outside the lounge. One of them was with the party-bus group, and when they left, one of the cars apparently followed them, Blackman said.

Police are seeking two vehicles: a newer, blue Chevrolet Malibu and an older, gray Pontiac Grand-Am. People with information are encouraged to call Highland Park police or Crime Stoppers at 800-SPEAK-UP (800-773-2587), where you can remain anonymous and possibly receive a cash reward.

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