Three suspects were on Sunday night detained by Jharkhand Police during a raid here in connection with the serial blasts in Patna that killed five people and left 83 injured.

“Based on the tip-off by Bihar police, we raided a place at Dhurva (area of the city) and detained three suspects. They are being interrogated,” a senior police officer said here.

“The raids led to the seizure of a pressure cooker, extremist literature, explosives and other materials used to make IEDs (Improvised Explosive Device),” he said, adding that raids are being carried out at other places also.

He, however, refused to divulge further details.

Earlier, Jharkhand Additional Director General of Police (Law and Order) S.N. Pradhan said an alert has been issued in the state after reports emerged that some of the accused involved in on Sunday’s blasts are from Jharkhand.

Jharkhand Chief Minister Hemant Soren has expressed concern over the incident and condemned the attack. He also asked officials to ensure that steps are taken to nab those involved in the attack soon.

Five people were killed and 83 injured in seven low intensity serial blasts in Patna of which six bombs went off in and around the venue of Narendra Modi’s mega rally at Gandhi Maidan shortly before his address to a huge gathering.