Two men arrested on suspicion of the murder of Thomas Jones in Worcester have been released from custody and are no longer being treated as suspects.
Thomas Jones, who is 18, was last seen on Wednesday 19 September close to the River Severn.
He is thought to have crossed the Sabrina footbridge before walking on to the footpath along the top of the flood defences on Hylton Road towards Hallow just before 3.50am.
The search continues.
Detective Inspector James Bayliss from West Mercia Police said: "The investigation into the disappearance of Thomas remains a priority and we are keeping an open mind as to the circumstances surrounding Thomas's disappearance. This remains a missing person enquiry.
"I would like to thank the public of Worcester for their support and concern, the community response has been exceptional. We continue to actively search the area and I would reiterate that anyone with any information should contact the police as soon as possible."