Police, on Thursday, have said that they believe political causes were behind the triple blasts in the city on Sunday.
Addressing a press meet in the afternoon to provide information regarding their investigations, the police said that the blasts were not carried out by simple criminal gangs.
The police assertions have come in the wake of conclusion by the government that the blasts were carried out by those who did not want the Constituent Assembly (CA) election.
At the press meet, Additional Inspector General of Police Keshab Baral informed that Improvised Explosive Devices (IED) were used in the explosions. He said gelatin, electronic detonator and 1.5 mm metallic containers were used in the bombs.
He said that further investigations were underway. The police also released a sketch of one suspected person behind the Balaju blast. A high level task force led by AIG Baral has been formed to investigate the blasts. "Till now, we have not been able to identify the culprits as we need to get our hands on facts to reach any conclusion," AIG Baral said.
Three persons had been killed and over two dozen injured during the triple blasts that occurred simultaneously in Tripureshwore, Sundhara and Balaju on Sunday.