A man has been seriously injured after he was attacked in Southend.
He challenged four men last Friday on Ambleside Drive when he saw them kicking bin bags around on the road.
The first man was described as between 5ft8ins and 5ft10ins tall with brown hair. He was wearing a grey hooded jacket and dark jeans.
The second man was slightly shorter at around 5ft7ins tall. He wore a balaclava and a black hooded top.
The third man was 5ft8ins tall, and had mousey brown hair, styled in short dreadlocks. He was wearing a white and green top.
The fourth man was described by the victim as black, around 6ft tall, and wore a glittery hooded top.
All the men were thought to be around 18 years old.
Anyone with information is urged to contact police.