It is confirmed that the serial blasts in Mumbai are terror attacks, according to sources in the Intelligence Bureau.  The Union home ministry while confirming the same has declared a red alert across the nation.

A team of the Intelligence Bureau which is examining the case says that it is too early to determine as to who is behind this blast. "However we are examining the Indian Mujahideen angle," IB sources

Preliminary investigations have revealed that 7 IEDs were used and the explosive device was wrapped in cloth bags and tiffin carriers. This bears the signature of the Indian Mujahideen, a member of the NIA who is also investigating the case says.

The entire nation has been put on high alert following this attack. These groups may try and trigger off similar blasts in other parts of the country and hence all police stations have been put on high alert, IB sources also add.