Parents are being urged to call the police if a teenage girl called 'Ava Taylor' contacts their children on Instagram.
A man is said to be masquerading as a 13-year-old girl called Ava and contacting schoolchildren.
A warning was first sent out to students at Oasis Academy Brislington, Bristol, as a number of students were sent friend requests and the warning has now been shared nationwide.
It is understood that the man's Instagram page is filled with "horrible pictures and videos", the Bristol Post reported.
One parent said her son was sent a request by the man, going under the name of Ava Taylor.
Luckily they quickly realised the request was suspicious and it was deleted.
But it is understood the Instagram page belonging to the man contained some ‘horrible pictures and videos’.
The school sent out a safeguarding message to parents and the incident has also been reported to the police.
A spokesman for Oasis Community Learning told Bristol Live: “Our highest priority is the safety and wellbeing of our students and staff.
“If one of our academies are made aware of any safeguarding risks they follow strict protocols to make the situation safe.
“As per our procedures, Oasis Academy Brislington sent out a communication to parents at the end of last week to be vigilant with regards to their child’s social media activities following reports that a local young person had received inappropriate messages from an unknown source."
