The suicide attack had killed 40 Central Reserve Police Force jawans in February, 2019 | File photo from PTI

A day after the arrest of a father and daughter from South Kashmir in Pulwama terror conspiracy, the National Investigation Agency (NIA) on Wednesday carried out multiple raids in Pulwama.

Several samples were picked up from 22-year-old Shakir Bashir Magrey who was arrested in February by the agency, making it the first arrest in the case.

The team of the NIA interrogators took Magrey to his residence in Hajibal, Kakapora in Pulwama for identification of room where IED was prepared.

The suicide attack had killed 40 Central Reserve Police Force (CRPF) jawans in February, 2019.

Sources said that several samples were picked up for explosive testing. The samples will be sent to Central Forensic Science Laboratory (CSFL).

Sources told India Today, "Despite a long gap, explosive traces are sometimes left behind. It will only be known when lab will send it's report with confirmation. We are hopeful."

Sources also confirmed two more suspects. A father and son were questioned in the case.

They have been identified as Ab Gani Bhat (father) and Muntazir Bhat (son).

NIA sources said that Pakistani top commander Mohammed Ismail alias Adnan used his Amazon account on Muntazir's computer to order batteries and gloves besides arranging for aluminium powder

On Tuesday, Tariq Ahmed Shah (50), son of Mohd Maqbool Shah and resident of village Hakripora, Pulwama, Jmmu and Kashmir and his daughter Insha Jan (23) were arrested.

Tariq Ahmed Shah works as a tipper driver in South Kashmir while daughter Insha was a school drop-out.

Both were arrested for harbouring Pulwama conspirators.

They had facilitated the terrorists at their home and provided food and other logistics during their stay on more than 15 occasions for two-four days each time, in their house during the year 2018-2019.