There are "promising leads" in the investigations into the bomb blasts that rocked Mumbai and Delhi in a span of less than two months but no one has been "confirmed" as accused yet, home minister P Chidambaram said in New Delhi on Friday.
Asked about a possible breakthrough in either of the two blast cases, the home minister said, "Well that depends on what you call a breakthrough.
"If you are asking are there any promising leads, the answer is yes. If you are asking whether any one has been confirmed to be an accused, the answer is no, not yet," Chdiambaram told reporters in New Delhi.
Referring to the September 7 blast outside the Delhi High Court which left 15 people dead and scores injured, he said, "Having regard to the gravity of the offence, the Centre decided to entrust the investigation of the case to the NIA."
The July 13 blasts at three places in Mumbai left 24 people dead. While there were no arrests concerned with the Mumbai blast cases, in Delhi the investigators have arrested two persons for sending an email after the blast.
Asked whether any fresh alerts had been issued in view of the forthcoming festival season, Chidambaram said that states like Gujarat and West Bengal have been advised to maintain a tight vigil.