GRAND HAVEN (AP) – A Lake Michigan surfer has helped in the rescue of two girls who police say were caught in an apparent rip current.

Grand Haven Public Safety Director Jeff Hawke says the girls, ages 13 and 14, were reported to be 800 feet from the pier Thursday afternoon off of Grand Haven State Park. Bystanders and emergency personnel pulled them from the lake.

READ MORE: Michigan Matters: The Mobility Revolution Envelops the Region

Zeb Boeskool of Grand Haven was surfing at the lake, and says he swam out and got the 13-year-old. Hawke says she wasn’t breathing, and she was taken to a hospital in serious condition. He told the Grand Haven Tribune that her condition improved to stable by Thursday evening.

READ MORE: Michigan Humane Rescues Kitten From Drain Pipe In Detroit

The 14-year-old was taken to the hospital for observation and was released.

A red flag was flying at the beach, warning people of dangerous swimming conditions.

MORE NEWS: Back Again: DTE Energy Music Theatre Returns To Original Name

TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.