UPDATED 01/24/11 6:12 a.m.

CHICAGO (CBS) —– Police are searching for suspects, after a woman was shot outside the popular Green Dolphin Street nightclub over the weekend.

The shooting happened outside the nightclub, at 2220 N. Ashland Ave., around 3:30 a.m. Sunday, police said. The woman in her 20s was shot in her back in front of the club.

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The victim was taken in critical condition to Advocate Illinois Masonic Medical Center.

Green Dolphin Street is located at the intersection of Ashland and Webster avenues just west of the north branch of the Chicago River.

The nightclub specialized in jazz and big-band music, and also included the pizzeria and wine bar Oriveto.

Last year, the restaurant closed and the jazz and other music shows were canceled, but the nightclub has remained open for concerts, private parties, and the weekly “Boom Boom Room” house music nights.

Grand Central Area police detectives are investigating the shooting.

The Sun-Times Media Wire contributed to this report.

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