Information and Broadcasting Minister Sheikh Rashid Ahmad on Sunday said that culprits of Nishtar Park, Karachi, bomb blast would be arrested soon.
The investigations were at a advance stage the perpetrator of the gory act would not escape punishment, he told a private television channel.
The whole terrorist network responsible for the shameful act would be unearthed and smashed soon, he vowed.
The recovery of unclaimed head from the site has proved that it was a suicide attack, he said.
The Pakistani agencies were capable enough and can detect any crime, as it does not need the services of any foreign agency, he added.