The California Highway Patrol says it is investigating a video that shows an officer repeatedly punching a woman after trying to stop her from walking into traffic.

As Reuters notes: "The video, which was taken by a passing motorist, posted online and broadcast by local television stations, has caused an outcry from community activists who say the officer used excessive force in the arrest on Tuesday."

After the officer spotted the barefoot woman walking along the shoulder and stepping into lanes of the 10 Freeway near the La Brea Avenue exit, he approached the woman, who became "physically combative," the CHP said in a statement. The video then shows the officer pull her to the side of the highway as he begins to beat her.

"We're looking at every possibility, every fact, every circumstance that have contributed to this situation, and we're going to try to come to a just conclusion," Highway Patrol Assistant Chief Chris O'Quinn said at a news conference on Friday.

An attorney for the family of the woman shown in the video, who is not named, is asking that the two officers involved in the incident be punished.

Copyright 2016 NPR. To see more, visit