Law and Order Minister Sagala Ratnayaksa said Police officers would seen be sent to Dubai to bring former diplomat Udayanga Weeratunga back to the country.
"Our diplomatic mission and the Foreign ministry are currently working with the Dubai authorities in this regard," the Minister said, addressing a public meeting in Mawarala, in the Matara district.
The Minister said, Weeratunga, who was wanted in connection with the MIG investigation, was traveling with an invalid diplomatic passport.
"His diplomatic passport was cancelled by the government as he was no longer in a position to use one. But we got to know that he was still using the invalid diplomatic passport," Ratnayaka said.
"The Police alerted several countries to arrest Weeratunga. As a result, the former Srii Lankan Ambassador was arrested in Dubai on Sunday," the Minister added.
Weeratunga, a nephew of former president Mahinda Rajapaksa, was wanted over an alleged financial misappropriation to the tune of US$ 14 million while purchasing four Ukraine-built MIG-27 aircraft for the Sri Lanka Air Force in 2005.
The Colombo Fort Magistrate, in October, 2016, ordered the Financial Crimes Investigation Division (FCID) of the Police to issue an international warrant to arrest Weeratunga over the same investigation.