The Uttar Pradesh anti-terrorism squad (ATS) and Delhi Police special cell arrested three ISIS (Islamic State) suspects on charges of terror conspiracy.
The three men were arrested from Mumbai, Ludhiana and Bijnor.
Searches were carried out in Mumbai (Maharashtra), Ludhiana (Punjab), Narkatiaganj (Bihar), Bijnor (Uttar Pradesh) and Muzaffarnagar (Uttar Pradesh).
Besides Uttar Pradesh ATS and Delhi Police special cell, the crime investigation department of Andhra Pradesh Police, Maharashtra ATS, Bihar Police and Punjab Police were part of the operation.
Further investigation is on and six people are being questioned by police.
According to information accessed so far, the three arrested men are suspected to be part of a terror module which was planning to carry out terror activities across the country.
Some of the members of the module were trying to look for potential recruits.
Nearly a month ago, police had busted an ISIS-inspired terror module and one of its suspected members, Saifullah, was killed in a 12-hour siege and anti-terror operation in Lucknow. The module was allegedly involved in the Ujjain train blast.
According to the National Investigation Agency (NIA) probe reports, the ISIS-inspired module had made a failed attempt to carry out an explosion at Prime Minister Narendra Modi's rally in Lucknow on Dussehra last year.