BJP President Rajnath Singh says India should recall its envoy to Pakistan and scale down diplomatic relations, demands .

Leader of Opposition in the Rajya Sabha Arun Jaitley said, "Today is a day of sadness, regret and anguish" in view of the way Sarabjit Singh was killed in Pakistan.

"I am sure the whole Parliament will raise its voice unanimously. The issue was lingering for long and we express our condolences with the family," he said.

The BJP leader used the issue to target the government, questioning as to which way India's foreign policy headed. "It is a sample of how our tottering government has turned coward," he said.

Jaitley said Pakistan has lost several battles with India and this is an alternative to execution of death sentence that Pakistan has found. "Even birds cannot venture or fly near the prison cell as prisoners are kept in seclusion," he said.

"A prisoner cannot be attacked like that and Pakistan's claim that this is an act of non-state actors cannot be believed as it seems that Sarabjit was thrown before wolves," Jaitley said.

He insisted that this could not have happened "without the total involvement of Pakistan government and police forces". He asked the government to do some introspection of its foreign policy.