Home Secretary G.K. Pillai said that the government had taken extensive precautions to protect athletes and spectators planning to come to India for cricket's Indian Premier League, the field hockey World Cup and the Commonwealth Games in October.
"A security system is being put in place which should ensure their total security," Pillai said.
International athletes have expressed concerns about coming to India since the bombing of a cafe in the city of Pune two weeks ago killed 15 people.
Former Australia spinner Shane Warne said he was reconsidering participating in the IPL. Other Australian cricketers heading to the IPL were due to get a security briefing on Tuesday.
"The whole situation is a little bit disappointing because I would love to go to the IPL personally and hopefully everything can work out and we can go," said fast bowler Shaun Tait, who is contracted to play for the Rajasthan Royals in the tournament from March 12 to April 25.
The concerns about security increased after the Pune bombing. A Kashmir-based militant linked to al-Qaida was reported to have subsequently warned international athletes to avoid the Commonwealth Games, the IPL and the field hockey World Cup, which starts Sunday.
But Pillai dismissed the report.
"At the moment, there are no credible threats to any of the sporting events in India," he said.
Pillai said 2,000 security personnel would be patrolling the hockey World Cup.
Police officials have outlined plans for securing the Commonwealth Games, where they expect 8,000 athletes and at least 100,000 spectators.
The measures include deploying commando teams, rooftop-based snipers, helicopter surveillance, searches of everyone entering the game venues and even food tasters at some hotels. Pillai added that several foreign security teams have also arrived.
