Singh was under investigation by the federal agency as part of the case lodged under the Prevention of Money Laundering Act (PMLA) against an educational trust run by his wife and former legislator Kanta Andotra, they said.
"This was my first time at Boston Marathon, and to get into the race you have to qualify certain criteria. It's more of a challenge you set for yourself," Andotra told rediff.com. "It was very unfortunate to see what happened. The commotion, the way people were disturbed. My family and I did go through some trouble but obviously it's nothing compared to people who were injured and lost their life."