Sri Lankan immigration officials said on Tuesday they prevented the president’s brother and former finance minister Basil Rajapaksa from flying out of the country, as anger mounted against the powerful family for a debilitating economic crisis.

It was not immediately clear where Rajapaksa, who also holds US citizenship, was trying to go. He resigned as finance minister in early April as street protests surged against shortages of fuel, food and other necessities, and quit his seat in parliament in June.

His elder brother Gotabaya Rajapaksa will resign as president on Wednesday to make way for a unity government, after thousands of protesters stormed his and the prime minister’s official residences on Saturday demanding their ouster. The president has not been seen in public since Friday and his whereabouts are unclear.

The Sri Lanka Immigration and Emigration Officers Association said its members declined to serve Basil Rajapaksa at the VIP departure lounge of the Colombo airport.

“Given the unrest in Sri Lanka, immigration officials are under tremendous pressure to not allow top-level people to leave the country,” K.A.S. Kanugala, chairman of the association, said.

“We are concerned for our security. So until this issue is resolved, the immigration officials working at the VIP lounge decided to withdraw their services.”

Pictures of Basil Rajapaksa at the lounge were carried by local media and widely shared on social media, with some people expressing anger at his attempts to leave the country. Basil Rajapaksa could not be immediately reached for comment and a close aide declined to give details.

The Rajapaksa family, including former Prime Minister Mahinda Rajapaksa, has dominated the politics of the country of 22 million for years and most Sri Lankans have blamed them for their current misery.