Islamists have warned the creators of TV show South Park they could face violent retribution for depicting the Prophet Muhammad in a bear suit.

A posting on the website of the US-based group, Revolution Muslim, told Matt Stone and Trey Parker they would "probably wind up like Theo Van Gogh".

The Dutch film-maker was shot and stabbed to death in 2004 by an Islamist angered by his film about Muslim women.

A subsequent episode of the cartoon bleeped out references to Muhammad.

The posting gave details about a home Stone and Parker reportedly co-own.

It also listed the addresses of their production office in California and the New York office of South Park's broadcaster, Comedy Central.

"We have to warn Matt and Trey that what they are doing is stupid and they will probably wind up like Theo Van Gogh for airing this show," warned the posting, written in the name of Abu Talhah Al-Amrikee.

"This is not a threat, but a warning of the reality of what will likely happen to them," it added.

Mr al-Amrikee later told the Associated Press the posting was not an incitement to violence. It had been published to raise awareness of the issue and to see that it did not happen again, he added.

A Comedy Central spokesman said the network had no comment.

In the 200th episode of South Park, broadcast in the US and UK last week, Muhammad appeared several times inside a bear suit. Figures from other religions were also depicted, including a drug-snorting Buddha and Jesus watching pornography.