Pakistan's Cricket Board (PCB) has threatened former captain Rashid Latif with legal action for suggesting the fourth one-day international between India and Pakistan might have been fixed.

"It's shameful for Rashid or anyone else to make such allegations without evidence in the midst of such an important series," PCB chairman Shaharyar Khan told reporters on Tuesday.

"We're looking into the matter and considering defamation and libel suits against him," he added.

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Latif, who stepped down as captain last year, said on the local Indus television channel: "Even a common man could observe that the players were acting on a script because the body language of the players was not as it should have been."

However, he did not substantiate the allegation with evidence.

India beat Pakistan by five wickets on Sunday to level the five-match series at 2-2. Pakistan made a challenging 293 for nine in their 50 overs before India reached 294 for five with five overs to spare.

"So far we've found nothing wrong in the way the matches have been played," Shaharyar Khan said.

Latif said he stood by his statement.

"I stand by my comments," he said. "I didn't make any direct allegations about match-fixing and only expressed my suspicions."

The deciding one-dayer will be played on Wednesday.

Last August, Latif was pardoned by the PCB after apologising for writing a letter directly to the International Cricket Council (ICC) on match-fixing.

He was left out of the Pakistan team for three years from 1998.

India are in Pakistan for their first full series in more than 14 years. The one-dayers will be followed by three Tests.