Four Tehreek-i-Taliban Pakistan (TTP) members were arrested in Islamabad during a late night raid by law enforcement personal.
According to intelligence sources, a group of terrorists from Khyber Pakhtunkhwa entered the capital to carry out a terrorist attack.
The authorities did not reveal the identities of the four TTP members as other men from the group suspected to be in the capital are yet to be arrested.
Yesterday, a major terror bid was foiled when a suspected suicide bomber was intercepted by police near Rawalpindi.
Security has been put on a high alert in Rawalpindi and Islamabad following the recent spate of attacks all over the country.