(AP) — A western Kansas police department has finished its investigation into the death of a 58-year-old Kansas City, Mo., woman two days after she was jailed for possessing marijuana.

The Kansas City Star (http://bit.ly/1jToiXT) reports Goodland police have turned the case over to the Sherman County prosecutor’s office to determine what action should be taken.

Brenda Sewell and her sister were pulled over for speeding by the Kansas Highway Patrol in Goodland on Jan. 20. A trooper arrested them after finding marijuana, and they were taken to jail.

Sewell’s relatives say jailers didn’t give her medication and were slow to help when she became ill and began to foam at the mouth on Jan. 22. She was pronounced dead at Goodland Regional Medical Center.