A notice is posted on Friday, Aug. 14, at the Prospect Heights Trailhead of Chugach State Park in Anchorage about a recent bear mauling. (Marc Lester / ADN)

Multiple Anchorage trails have been temporarily closed after recent “close encounters” with brown bears, officials said Tuesday.

Several Far North Bicentennial Park and Campbell Tract trails were closed Tuesday as a precaution amid “heightened bear activity” in the area, the Anchorage Parks and Recreation Department said in a statement.

The trails included Rover’s Run Trail, the Salmon Run Trail and the Viewpoint Trail, officials said.

The closures, officials said, would remain in effect “until further notice.”

The decision was made in conjunction with the federal Bureau of Land Management and Alaska Department of Fish and Game, according to the statement.

The BLM in a statement earlier this month said the trails are near Campbell Creek, which draws bears during salmon runs. State and federal wildlife biologists have noticed more salmon than usual in the creek, the federal agency said.

“While bears can be encountered on any Anchorage-area trail, this closure provides space for bears to forage in an area where they naturally congregate seasonally,” officials said in Tuesday’s statement. “Anchorage Parks and Recreation and BLM urge the public to respect trail closures, and to exercise caution and bear awareness while recreating.”

The closure also comes after a brown bear attacked and injured a well-known Alaska athlete on a trail run last week on the nearby Wolverine Bowl trail, accessed from the Prospect Heights trailhead.

Earlier this month, Alaska State Parks additionally closed the Albert Loop Trail in Eagle River as bears began returning to the area around the Eagle River Nature Center to feed on spawning salmon. That trail closes seasonally when bears return to bulk up on fish until freezing conditions push most into hibernation, officials said.