Gunmen on motorbikes shot at a tourist bus near the main mosque in the Indian capital on Sunday, wounding two Taiwanese visitors in an attack only weeks before the city hosts the Commonwealth Games.   

The Commonwealth Games is seen as a showcase event for India as it emerges onto the global economic and diplomatic stage. Some militant groups have threatened to disrupt the Games.

"The two men were wearing helmets and raincoats. They fired indiscriminately at a tourist bus before escaping," K. Singh, a senior police officer in Delhi, told Reuters.   

Security has been tightened in the capital ahead of the Games, with authorities mindful of militant attacks in Indian cities over recent years in which dozens have been killed.   

Police would not confirm whether militants were behind the attack near the historic mosque, one of the most popular tourist sites in the capital.

The condition of the two wounded tourists was not immediately known. The foreigners were Taiwanese, police said.

"There was some firing outside gate number 3 of Jama Masjid (Delhi's main mosque)," Delhi police spokesman Rajan Bhagat told Reuters. "We can't say (whether it was a militant attack)."    

The Commonwealth Games, a four-yearly event organised by the 54-member organisation of mainly former British colonies, begin on October 3. India remains jittery about a perceived threat of Islamist attacks from Pakistani territory. It accuses its neighbour of failing to act against militant groups.   

Relations between India and  Pakistan have been tense since the 2008 Mumbai attacks by Pakistani-based militant group Lashkar-e-Taiba. - Reuters