Pakistani police also arrested the head of Axact in the early hours of Wednesday following a raid on the company's diploma printing operations, and registered a criminal case against him, investigators said.
The interior ministry wrote to the Federal Bureau of Investigation (FBI) on Tuesday seeking assistance. Officials said a letter had been sent to the US State Department.
The request came days after a New York Times article said that Axact had run a global network of fake online universities that manipulated customers and generated tens of millions of dollars in estimated revenue annually by selling bogus diplomas.
Axact has denied the allegations, calling them "baseless".A senior interior ministry official, who did not wish to be named, said: "This is a scam whose victims are mostly people outside of Pakistan, in the U.S., UK and the Middle East.

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