Police are appealing for information after an 11-year-old girl reported she was assaulted by a man while in a play area in South Ockendon.
The girl said that the man pushed her as she used a climbing frame in Darenth Lane between 5.15pm and 5.25pm on Sunday July 19.
It is understood there was an altercation involving the suspect, the same girl and another man following the incident.
A 34-year-old man from Grays was arrested on suspicion of assault and he remains under investigation.
Anyone with information is asked to call Grays police station on 101 quoting crime reference 42/107630/20.
Alternatively, you can call Crimestopppers anonymously on 0800 555 111.