Pakistan's support to terror groups is causing "great harm" to South Asia, Prime Minister Manmohan Singh said on Sunday, while denying that India was to blame for terrorism in Balochistan.
"The government and people of Pakistan should realise the great harm that patronization of terrorist groups has done to South Asia," the prime minister told reporters in Mumbai.
He said that the situation in Pakistan and Afghanistan "is not what it should be. The rising role of terrorist groups (in the two countries) is a matter of concern to all of us.
"We have to make adequate preparations to deal with the consequences of this overflow of terrorism from our neighbours to our country.
"We are taking all necessary measures in this direction," he added.
Manmohan Singh's comments came three days after a car bomb exploded outside the Indian embassy in Kabul and after the Pakistani military ended a bloody siege of its army headquarters in Rawalpindi.
One of the terrorists arrested in Rawalpindi has been blamed for the March attack on the Sri Lankan cricket team in Lahore.
The prime minister also denied Pakistan Interior Minister Rehman Malik's allegation that India was responsible for the rising wave of terrorism in Balochistan province.
Speaking two days before Maharashtra elects a new assembly, Manmohan Singh said Islamabad's allegation was "totally wrong".
"We are not in the business of exporting terrorism to Pakistan or any other country," he said. "The people and government of Pakistan jolly well know that this is a false accusation."