Four men have been arrested following a robbery in South Ockendon.

A 17 year-old boy was walking with a friend along Rosemary Road at around 4.25pm on Sunday, January 20 when they were followed by a group of men.

He was threatened with a knife and had his mobile phone and a small amount of money taken.

An 18 year-old man from Grays and a 22 year-old man from South Ockendon were later arrested on suspicion of robbery.

An 18 year-old man from London was arrested on suspicion of robbery and possession of an offensive weapon.

A 17 year-old boy was arrested on suspicion of robbery, possession of an offensive weapon, possession of Class A drugs, and possession of Class B or C drugs.

All four are currently in custody.