Forty suspects, including the driver of a van allegedly used by the suicide bombers, have been arrested in connection with the attacks which shook Sri Lanka.
In another development, the CBI submitted in a sealed cover a forensic report from Ahmedabad Forensic Laboratory on ballistic evidence related to the killing of the three rationalists --- Dabholkar, Pansare and Kalburgi.
The Tamil chief minister suffered a heart attack on Sunday evening.
