Mumbai, Mar 15: A central team of National Security Guards (NSG) has made a study to ascertain the nature of the explosion that ripped through a suburban train killing 11 on Thursday night, police said today. The team, which arrived here last night, examined the materials used in the blast to determine the nature of the explosion before returning to Delhi today, police said.
The NSG team maintains the records of all blasts reported in various parts of the country. Meanwhile, a tight vigil was being maintained at important locations like Mantralaya, airport and railway stations, police said.

Bureau Report