A disruption in the check-in systems at various airports has delayed flights across multiple airlines, Air India said on Tuesday.

Since its launch on January 17 this year, the Sanchar Saathi mobile app has seen more than 1.4 crore downloads and has successfully blocked over 42 lakh stolen or lost mobile devices, official data showed on Tuesday.

Madhav Khurana has been appointed as special public prosecutor for the Delhi bomb blast case. So far, NIA has arrested seven people and examined 73 witnesses.