Abbotsford police are investigating a fourth suspect following the convoluted kidnapping of a mom and two teenage males in Abbotsford last Friday.

The APD announced Monday that three suspects were no longer in custody after the evidence against them was deemed too circumstantial to proceed with charges.

The trio, who were arrested in a car on Highway 1 shortly after the kidnapping, had previous negative contacts with law enforcement and is still under investigation, according to police.

However, the Abbotsford-Mission Times has learned a fourth suspect also had charges dropped against him.