Parents of children at a Gravesend school have been warned of two suspicious men in a car approaching a pupil today.

A text message was sent by St John's Catholic Comprehensive School shortly after the end of the school day.

It advised also pupils to travel home in groups and said police are aware.

The message said: "Reports of two suspicious black males in a black car in the vicinity of the school approached a student today.

"All students advised to be extra vigilant and travel home in groups. Police are aware."

The school, which also has an entrance on Old Road East, is a mixed secondary school with more than 1,000 pupils aged 11 to 18.

A police spokesman said: "Kent Police received a report at 12.24pm that two men in a car had spoken to a 17 year old girl in Abbey Road, Gravesend.

"She was not approached or harmed in any way.

"The girl has been spoken to by patrols."