RICHLAND — Baker County Sheriff’s Office marine deputies were continuing to patrol the waters of Brownlee Reservoir on Friday but with no success in finding a teenage boy from the Portland area who’s been missing since July 3.

The deputies are focusing on areas of the reservoir around Holcomb and Hewitt parks 3 miles east of Richland just off Highway 86, said Ashley McClay, sheriff’s office spokesperson

“There have been no sightings at this point,” McClay said Friday afternoon.

Thierno Bah, 17, had been camping at Hewitt Park where his foster family and friends were vacationing, when he disappeared, McClay said.

The foster family, with whom Bah had been living for a few months, told searchers he had taken a walk about 5:30 p.m. on July 3. The family reported the boy missing about 9 p.m. Friday when he failed to return to camp.

It was not unusual for Bah, originally from the West African country of Guinea, to take long walks, his family said.

They are offering a cash reward to anyone with credible information leading to his whereabouts. To make a report, call Sheriff Travis Ash at 541-523-6415.

Ash also has been in the Richland and Halfway areas checking out reports of possible sightings, none of which has panned out, McClay said.

“We appreciate those tips coming in,” she said.

Chris Galiszewski, Baker County Sheriff’s Search and Rescue Team coordinator, spent the week in the Richland area interviewing people and distributing fliers that include photos of Bah.

He is described as having a thin build and short hair. He is 5 feet, 2 inches tall, weighing 140 pounds. He was last seen wearing gray pants and a dark-colored T-shirt.

Bah speaks French and Spanish fluently, but is not a fluent English speaker, the flier states.

More than 35 people helped search for the teen, McClay said.

Search and rescue teams from Baker, Malheur and Umatilla counties during the weekend searched by ground and air and used sonar technology to scan the waters of Brownlee Reservoir trying to find Bah. Oregon State Police and Oregon Department of Forestry employees also participated in the search.