Collen (15) was reported missing on Monday July 3 and a number of enquiries are ongoing to find him.
The teenager is described as black, 6ft tall and has having brown eyes.
He was last seen wearing black jogging bottoms, a cream and black T shirt and brown trainers.
The 15 -year-old has connections to Leeds and enquiries are ongoing there and in Wakefield to locate him.
Anyone who has seen Collen is asked to contact Wakefield CID on 101 referencing police log 662 of July 3.
Information can also be given online at www.westyorkshire.police.uk/101livechat
