Update, 1:40 pm: The suspected militant detained from Uttarakhand was reportedly sent to police custody for 15 days, along with his three accomplices. They were allegedly planning to carry out attacks at the Ardh Kumbh Mela in Haridwar.

Original Story:

The Delhi Police reportedly arrested a suspected militant along with his three accomplices from Roorkee on Tuesday night. The prime suspect belonged to an international militant outfit and the four of them had allegedly planned an attack at the Ardh Kumbh Mela in Haridwar, Uttarakhand.

The detained suspected militant has been identified as Akhlaq (his full name has not been revealed). The Delhi Police will bring him to the national capital and produce him before a court on Wednesday. Meanwhile, the Special Cell of Delhi Police is interrogating the three associates in Roorkee, PTI reported.

The three associates of Akhlaq have been identified as Osama, Mohd Azim and Mohd Mahroz, ANI reported. 

The detained militants were also reportedly planning to target vital installations across Delhi and surrounding areas, according to India Today.

Akhlaq is also being questioned in connection to the attack on the Indian Air Force base in Pathankot, Punjab, on 2 January. He is suspected to be a member of Jaish-e-Mohammed, PTI reported.

The Special Cell of Delhi Police had, on Monday, arrested a suspected al Qaeda operative, Abu-al-Sami, from Nuh town in Haryana's Mewat district. During interrogation, Sami reportedly revealed details about a probable terror strike sometime around Republic Day.

Sami, who hails from Jamshedpur in Jharkhand, was trained in handling arms and explosives in Pakistan's Mansehra town in 2014. He had travelled to Pakistan in January 2014, India Today reported.

Heavy security was put in place for the Ardh Kumbh Mela in Haridwar after intelligence inputs suggested probable terror threat. Uttarakhand Police, Indo-Tibetan Border Police (ITBP), Seema Suraksha Bal (SSB), Rapid Action Force (RAF), Central Industrial Security Force (CISF) and Provincial Armed Constabulary (PAC) personnel have been deployed across the zone, The Tribune reported.