Biker shoots gal on E. Side

A GUNMAN on a bike shot a 26-year-old woman in the arm early Sunday after she stepped out of a cab on the Lower East Side, authorities said.

The gun-wielding cyclist fired off multiple rounds as he flew by Rivington and Ludlow Sts. in Manhattan around 5 a.m., according to cops.

The woman, who police say was not the gunman’s target, felt a sting in her left shoulder and realized she’d been shot. She went to Bellevue Hospital for treatment of a graze wound.

Cops recovered four shell casings at the scene in the ongoing investigation.