Sussex Police are searching for British actress Honeysuckle Weeks, who they say has been missing since late Thursday night after exhibiting concerning behavior.

Weeks, best known for her role on the drama Foyle's War, was last seen in Chichester, a city in West Sussex, at 9 p.m. Thursday night and was reported missing by family an hour later.

"We are concerned about Honeysuckle as her recent behavior has concerned family and friends and she has expressed to them she is feeling anxious," Detective Kate Witt said in a press release.

Witt noted that her lack of contact is unusual, even...