A man was fired from his new council job before he had even started after he vowed to launch a one-man “crackdown” on immigrants.

John Gibbs was told not to turn up for his first day at West Sussex County Council after bosses were alerted to messages he had posted on Facebook.

Among a series of bizarre online posts, the 25-year-old said: “Got a job at West Sussex County Council. Look out immigrants – time for a crack down [sic]”

In other messages posted under the name John “Jammy Dodger” Gibbs, he revealed his love for brothels, suggested girls “like” to be assaulted, and likened his interview with a council boss to having "phone sex".

Mr Gibbs was due to begin work at the local authority’s contact centre in Bognor but bosses sacked him after the Facebook page was brought to their attention.

His page also revealed he had been turned down for a job at Butlins before being taken on by the county council a week later.

A council spokesman said the recruitment process had been managed by outsourcing company Capita. He said: “John Gibbs was due to be employed at the contact centre in Bognor. However the offer of employment has now been withdrawn.

“We expect employees and prospective employees to behave responsibly in their use of social media. “We take immediate action against anyone who fails to behave appropriately, including in their use of social media.”

Nicole Bass, a recruitment consultant at the City Skills and Jobs Shop in Queen’s Road, Brighton, said jobseekers should be “very careful” about what they post on social networking sites.

She said: “People should never, ever put anything online that they wouldn’t be happy for a prospective employer to see.

“It’s something we tell all our candidates. You never know who’s going to be looking.”

Mr Gibbs was contacted for a response but did not reply.