04/07/2013 09:48 BST

Eric Joyce MP Asks Constituent On Twitter: 'Are You Screwing Ur Sister?'

Eric Joyce MP leaves City of Westminster Magistrates Court in London today where he was spared jail for beating up four politicians while drunk and telling police "You can't touch me, I'm an MP".

Falkirk MP Eric Joyce, who gained fame after starting a punch-up in a parliament bar last year, has become himself involved in two separate Twitter rows at the same time - including one in which he asked a constituent if they were "screwing" their sister.

On Thursday the former Labour MP, who quit the party last year after pleading guilty to assault charges following the Commons fight, directed the comment at Jamie Anderson.

Anderson had asked whether the MP would profit from the construction of an Unconventional Gas (UG) development in the Forth Valley between Falkirk and Stirling.

Joyce replied: "Sure, I'll tell you if I'm corrupt if you'll tell me if ur screwing ur sister."

To which Anderson responded: "I don't have a sister. What makes you suggest I'm in any way incestuous?"

The Falkirk MP shot back: "Your mother told me."

At the same time has he was involved in the spat with Anderson, Joyce was also engaged in a war of words with a fellow MP.

Joyce has called on the Labour Party to publish an internal report into allegations of vote-rigging by the Unite trade union in his constituency.

Having heard Joyce's demands in the media, Labour MP for East Kilbride Michael McCann said on Twitter: "I don't kick ppl when they're down but Eric's lost the right to comment."

But Joyce strongly defended his right to speak out on the issue, tweeting at McCann: "It's my constituency, dimwit. U another MP scared shitless of Unite's leadership?"

McCann urged Joyce to think before he spoke. "Ever heard of counting to ten?" he said.

Yesterday Labour confirmed that up to 500 members across the country have been recruited and had their subs paid by trade unions, as David Cameron savaged Ed Miliband over the party's links with Unite.

Following allegations that Unite tried to stitch up the selection of a general election candidate in Falkirk by cramming the constituency with members, Cameron branded Miliband "too weak to stand up to the Unite union and too weak to run Labour, and certainly too weak to run the country".

But Labour insisted Miliband had moved swiftly and decisively to order an inquiry into Falkirk within hours of allegations being raised, and to place the constituency party in "special measures" when that review uncovered cause for concern.