The Thai army has moved hundreds of soldiers into the business district of Bangkok to prevent anti-government protesters entering the area. <br/> <br/>Government said the intent was not to attack the protesters, but simply to block any attempt they might make to enter the area. The protests by the red-shirts, now in their fifth week, are currently focused in the city's shopping hub. <br/> <br/>The protestors are trying to force Prime Minister Abhisit Vejjajiva to step down and call an election. <br/> <br/>Late on Friday, Mr Abhisit had put the army commander-in-chief, Anupong Paojinda, in charge of national security. <br/>