Firefighters are attempting to rescue a dog from the Los Angeles River Monday in the San Fernando Valley after a morning of rainfall.

Los Angeles Fire Department units set up multiple rescue points along the Los Angeles River to retrieve a woman and her dog in the water near the Sepulveda Dam. The woman was rescued, but crews are still trying to rescue the dog.

A Los Angeles Fire Department rescuer was lowered into the water from a helicopter, but the dog wiggled from the rescuer’s grasp.

Downstream in Studio City, a man jumped into the water and clutched on to the dog as they drifted down the river. He lost his grip on the dog as he was plucked from the water by an LAFD helicopter rescue team.

The dog did not appear to be in deep water as it walked with the current in a section of flood channel with high concrete walls. Firefighters said the water was moving at an estimated 5 to 10 mph.

It was not immediately clear whether the woman and man were injured. Details about how they ended up in the river were not immediately available.