A local charter high school principal was caught in the back seat of a car, shirt unbuttoned, smoking marijuana with one of her students, police said.

North Palm Beach police arrested Krista Morton, 45, a principal at Mavericks High School, and an 18-year-old student after they got a call about suspicious people in a car, according to a police report.

Just before 8:30 p.m. Wednesday, Morton and the student were in a parked car at Lakeside Park, 700 Lakeside Drive, in North Palm Beach, according to the report.

The person who called 911 said they thought either people were engaged in s*xual activity or they were being attacked.

An officer knocked on the window of the car and Morton opened the door, telling the officers the two were “just friends.” She said she had picked up the teen on the side of the road because she was lonely and wanted to get to know him, police said.

According to the report, Morton’s shirt was unbuttoned, “exposing her shoulders and part of her chest.”

The teen had a different story. He said he was a student at Mavericks High School and that Morton was his principal.

Officers said they could smell marijuana as they were talking to the two.

Morton would not say whether she had been smoking marijuana, but did tell police that marijuana had been smoked, according to the report. On the passenger’s seat there was a plastic container with marijuana inside.

Both are charged with possession of marijuana. Morton was released from the Palm Beach County Jail Thursday while the teen is being held there on $1,000 bail.