Family members are searching for a University of Wisconsin-Green Bay student leader who disappeared after a night out with friends.

21-year-old Mahalia Xiong was reported missing after she didn't return from a night of bowling and drinking at Ashwaubenon Bowling Alley in Green Bay, Wisconsin.

Click here for video report by MyFoxWisconsin.com.

Xiong and her friends left the bowling alley about 2 a.m. Friday morning. Xiong took her own route home, heading for Green Bay and calling her boyfriend at about 2:30, but not leaving a message. No one has heard from her since.

Xiong is an officer in the university's Southeast Asian Student Union. Her brother, Tou Lee, says his sister is a responsible, outgoing leader.

She was driving a four-door, 1996 Mercury Sable.