A 24-year-old man was arrested on suspicion of murder and a 23-year-old man was arrested on suspicion of assisting an offender.

They have been bailed until January 2014.

Police are still appealing for help tracing Zain's movements in the final hours before his death.

The 19-year-old was found lying in the road in Bullocks Lane, Sutton, Macclesfield, with serious injuries on the evening of Wednesday, October 30.

He was taken by ambulance to hospital, where he died a short time later.

A post-mortem concluded the cause of death was due to a single stab wound.

DI Steve Jones said: "My team and I are currently working on tracing Zain's movements in the hours before his death and I am keen to hear from anyone who saw him between 4pm and 6.45pm on Wednesday, October 30.

"People can contact police direct on 101 or if you prefer you can pass information anonymously through Crimestoppers on 0800 555 111. We are also still appealing for anyone who saw suspicious activity in or near Bullocks Lane on 30 October to get in touch."

Two other men - Ricky Jervis, 22, from Dale Crescent, Congleton and Charles Beadell, 22, of Buckfast Close, Macclesfield - were charged with murder last week and have been remanded into custody.

Five more people were arrested and bailed pending further inquiries.

Two women aged 26 and 35, and a 23 year-old man were arrested on suspicion of assisting an offender, and two men, aged 21, from Liverpool and Congleton were arrested on suspicion of murder.

Anyone with information should contact the Operation Franklin team on 101 quoting incident number 796 of 30 October 2013.

Alternatively information can be given by contact Crimestoppers on 0800 555 111.