(Updated 13/8/11) A Lancaster man has been charged after posting a message encouraging disorder on Facebook – bringing the total number of Lancashire residents charged to four after recent unrest across the country.

Stefan Johnson, 21, of Greenfield Street, Lancaster has been charged with intentionally encouraging or assisting in the commission of an either way offence believing it would be committed – under the Serious Crime Act 2007.

He has been bailed to appear before Preston Magistrates Court on 30th August.

Responding to concerns about the use of social media that might encourage criminal behaviour, Prime Minister David Cameron told the House of Commons on Thursday that the Home Secretary was going to have meetings with organisations such as Twitter and Facebook about the issue, “but even before that they should recognise their own social responsibilities and stop broadcasting the images if they are inappropriate.”