There are three angles of investigations being taken by the Intelligence Bureau and the Hyderabad police in the twin blasts that have killed at least16 people in a busy market in Hyderabad.
While the revenge viewpoints pertaining to the hanging of 2001 Parliament attack accused Afzal Guru and the arrest of the youth in connection with both the assassination plot and Mecca Masjid blasts are being probed, the agencies are also looking into another angle of personal rivalry.
A police official said that a possible retaliation following the arrest of Majlis-e-Ittehadul Muslimeen leader Akbar Owaisi is also being looked into.
Although this angle looks extremely remote, the official said that they are checking it in any case. The routine questioning of several operatives who are in the custody for various acts of terror is also being conducted by the Hyderabad police.
At the moment, the biggest possible link points towards a revenge angle following the Guru hanging, police sources say. A clear picture would emerge soon, a police spokesperson said.
The police in the neighbouring states have been alerted and all possible attempts are on to nab the culprits, said a police source.