Leaders of Thailand's pro-government movement have warned that any attempt to oust Prime Minister Yingluck Shinawatra could trigger a civil war. They issued the warning at a rally outside Bangkok - the first staged by the red shirt movement near the capital since violent clashes broke out in November.

Opponents of Ms Yingluck and her party have filed legal cases against her. Months of anti-government mass protests have failed to unseat her. A member of the pro-government red shirt group holds a picture of Thailand's Prime Minister Yingluck Shinawatra during a rally on the outskirts of Bangkok, 5 April 2014 Protesters show their Thai identity cards after opposition claims that rally organisers paid migrants to attend Members of the pro-government red shirt group take part in a rally on the outskirts of Bangkok, on 5 April 2014. The PM's supporters say they are holding the rally to deter her opponents from attempts to oust her

Speaking to a crowd of tens of thousands, Jatuporn Promphan, the chairman of the pro-government United Front for Democracy Against Dictatorship (UDD), said judicial institutions were trying to take over power without elections :

What we are most concerned about - that we want to warn all sides against - is a civil war, which we do not want to happen.

It will happen if there is a coup and democracy is stolen.

 Thailand's Constitutional Court has ruled the 2 February general election invalid, officials say.

The snap poll was called by Prime Minister Yingluck Shinawatra amid major anti-government protests in Bangkok. The ruling party was expected to win, but the opposition boycotted it and protesters disrupted voting, meaning the election has not been completed.

The vote was found to be unconstitutional because it did not take place on the same day across the country, the court said. Polls were not held in a number of constituencies because protesters had blocked candidate registration.

It is not clear when a new election will be held. There is a senate election lined up for 30th March, but presumably this ruling affects that too.

Tourists are once again able to travel around protest-hit Bangkok, after demonstrators moved their camps from the city's major road intersections to a nearby park.

Protesters had blocked key streets in the Thai capital since mid-January as part of a city-wide shutdown in a bid to push out Prime Minister Yingluck Shinawatra and eradicate the influence of her brother, ex-premier Thaksin Shinawatra, who was ousted from power in 2006.

But on Friday, protest leader Suthep Thaugsuban told reporters that the groups of demonstrators would relocate their camps from the city's streets to Lumpini Park.

However, the UK Foreign and Commonwealth Office is still warning tourists to be vigilant. Advice on the website states:

Political demonstrations continue in and around Bangkok and elsewhere in Thailand. Some of these have been violent, including the use of firearms and grenades, and there have been casualties and deaths. The situation is unpredictable and further protests are expected. You should not enter protest sites or the adjacent pedestrian areas.