MINNEAPOLIS (WCCO) — The search continues for 16-year-old Thunder Brothersofall, who went missing last weekend while swimming in the swollen Redwood River.

Police say volunteer groups like Rapid Relief Team will give firefighters and officers a break in their search and bridge-monitoring duties after almost a week of around-the-clock work.

Brothersofall disappeared while swimming in the river with friends near Ramsey Park on September 15 at about 5:30 p.m. Ground and air searches have been in effect for days, including the use of drones and K-9s. Bridges are also being staffed 24 hours a day to watch the river.

The river’s high level and fierce current has made the search particularly challenging. Rain is also expected in the area this weekend, which could further complicate the effort.