A man has been sent to prison for a week after masturbating in front of a 13-year-old girl in a children's playground.

Tomazs Lis was charged for sexual offences after he exposed himself to the teenager in King George's Park, Wandsworth, on April 26.

The victim was walking through the children's play area at about 3.30pm when the man exposed himself to her.

The girl called the police, who took her on a drive around the area.

Lis was identified walking around the park half an hour later and was arrested.

He originally denied the offence, but was charged and appeared in South Western Magistrates Court on April 28.

Lis pleaded guilty to exposing himself in a public place and was sent to prison for seven days.

He will also be subject to a sex offenders notification order.