ISLAMABAD: Interior Minister Chaudhry Nisar Ali Khan has expressed grave concern over allegations against national defence institutions following an attack on senior journalist Hamid Mir in Karachi.

"National institutions are being attacked and accused without any evidence which is registrable," Nisar said in a statement issued from the Interior Ministry in Islamabad.

"The way our defence institutions are being criticised, there is no such example in the world," he commented.

The interior minister said whatever specific circles propagated against the country's institutions, it has been further disseminated by the nation's enemies to the world.

"Such criticism is regrettable, as our defence institutions are rendering sacrifices for the motherland," he said.

"When the government has constituted a three member judicial commission, than such accusations have no meaning and justification," the minister commented.

He said the attack on Hamid Mir is a tragic incident not only for his family but also for the nation and it is strongly condemned.