A teenager has been cautioned by police investigating posts on social media that mocked TV star Katie Price's disabled son Harvey.

The unnamed 19-year-old man was arrested in February after using Twitter to target Price's 14-year-old son, who is partially blind, autistic and has Prader-Willi syndrome.

A Sussex Police spokesman said: "A 19-year-old man from Newick, arrested on suspicion of racially or religiously aggravated harassment, alarm or distress by words or writing, has been given a caution in connection with offensive social media posts targeting Katie Price's son."

Ex-glamour model Price, 38, has called for the introduction of a national register of cyber bullies as she said people of all ages and backgrounds were suffering every day.

She started an online petition to demand the Government take action against trolls.

It has now gained more than 210,000 signatures.

Speaking on ITV's Loose Women programme this month, Price said creating an official list of trolls could help act as a deterrent as featuring on the list could affect people's job prospects.

She said: "The police don't know what to do with them. They don't know how to punish them or a consequence. There are always a lot of people who have bullied people and stuff, but when it's really bad, there should be action taken."

Price has previously tweeted her thanks for the public's support for her against trolls.

She said: "This is something I feel strongly about and will always raise awareness for."