A police officer has been slashed with a knife, while arresting a suspected robber in Derby.
The officer was attacked at around 10.00pm last night - Tuesday 15 October - on Slack Lane.
Officers were called just before 10.00pm after a man was allegedly robbed of his mobile phone in the street.
Shortly after, two officers found a man matching the description of the suspect and attempted to detain him.
But during that attempt, one of the officers was slashed to the head with a knife.
A 37-year-old man was arrested at the scene on suspicion of assault occasioning grievous bodily harm and robbery.
He remains in police custody.
Detectives investigating both the robbery and the alleged assault are appealing for any witnesses to come forward.