New Delhi, July 23 - A heated argument Thursday broke out between Trinamool Congress MP Kalyan Banerjee and security personnel when he tried to cross the security cordon laid for Prime Minister Manmohan Singh near parliament.

Highly placed security sources told IANS that Banerjee was in his car and wanted to go to parliament at the same time when the security cordon for Prime Minister Manmohan Singh's convoy had already been laid. The incident occurred at the Vijay Chowk around 12.25 p.m.

Sources claimed that Banerjee argued that he was also an MP, so he should be allowed to cross the security cordon. But the security officials objected and a heated argument broke out between them.

'There was a minor argument between Kalyan Banerjee and the security personnel. But there was no security breach whatsoever,' a senior official handling the prime minister's security told IANS.

The prime minister's security is exclusively handled by the elite Special Protection Group. All roads leading to the route the prime minister's convoy would take are closed for traffic half an hour before it passes.

Security agencies are probing how Banerjee's car even got close to the route.