India, the largest national force in the Gulf of Aden and northern Arabian Sea region, captured the pirates from the cargo ship Ruen last week
A Saudi Arabian airlines plane at Sudan's Khartoum airport came under fire during clashes on Saturday, the state-owned carrier said.
It said it had moved its passengers, crew and staff from the airport to the Saudi embassy in Khartoum.
Rival carrier Saudia said separately that it had suspended flights to and from Sudan until further notice.
Clashes between Sudan's army and the Rapid Support Forces (RSF) paramilitary group erupted on Saturday, with gunfire heard in several parts of the capital Khartoum and witnesses reporting shooting in adjoining cities.