Several campsites have been temporarily closed in Rocky Mountain National Park due to an increased number of bears in the areas, park officials said.

Five backcountry campsites were closed on July 13 for safety reasons after there have been several sightings of two bears since mid-June in the Wild Basin area.

Park officials blame visitors who improperly stored food in the park for the increased number of bears in the area.

Officials said at least two bears have gotten food at a campsite and at residences and businesses outside of the park.

The campsites that have been closed are all in the southern portion of the park, including Pine Ridge, Tahosa, Aspen Knoll, Siskin and North St. Vrain. They were expected to remain closed through Thursday or until officials determine the areas are safe.

Officials said once bears associate humans with food it is extremely difficult to change their behavior, which often leads to the bear having to be killed because of visitor safety concerns.

By closing the campsites, officials said they hope the bears will unlearn the food habits they have learned from visitors.

It is estimated that there are currently 20 black bears in the Rocky Mountain National Park.

Park officials remind visitors to properly store food and follow the regulations at the campsite or residence. Citations can be issued to those who store food improperly.

Officials said that people should never leave trash on the trails or any food particles behind.

All food should be stored in airtight containers that should be placed in a car's trunk or out of site.

Many campsites provide canisters for visitors to store their food in.

If approached by a bear, people should not run, but move away from the bear. For more information about the Rocky Mountain National Park and the campsite closures, call the park information office at 970-586-1206.