Easter Sunday bombings in Sri Lanka had left 253 people dead | Photo Credit: AP

Cochin: The National Investigation Agency on Tuesday arrested the fourth member of the ISIS module that was actively planning attacks in Kerala. The fourth member - Fazil was picked up from the Cochin airport on his return from the Gulf.

According to reports, Faizal was working abroad and was served a notice to appear before the NIA. As soon as he arrived at Cochin, he was taken into custody. He will be produced in the NIA court tomorrow (on Wednesday).

The three other members of the module are already in NIA's custody. First, Abu Bakar Siddiqui and Ahmed Araffath were arrested on April 28 from Kasaragod, the next day, Riyas Aboobacker was arrested from Palakkad.

According to NIA, Aboobacker has confessed to planning a suicide attack in Kerala and has revealed that he was trying to recruit people in this connection and had allegedly got in touch with these three people.

He has also disclosed that to mentally prepare himself as a suicide bomber, he was listening to speeches and videos of Zahran Hashim, a radical Tamil-speaking cleric who is believed to have masterminded the April 21 Easter Sunday bombings in Sri Lanka which left 253 people dead.

This four-member group was in touch with the ISI, as per the NIA. In the agency's earlier raids - when the first two members were arrested - controversial DVDs of Islamic preacher Zakir Naik were also confiscated.

During the interrogation, Aboobacker has confessed of being in contact with Abdul Khayoom - who is accused in the Valapattanam ISIS case - and is believed to be in Syria. This group was also in touch with Abdul Rashid, Ashfaq Majeed - people who are believed to have joined the ISIS and have already migrated to Afghanistan and Syria.