Charred vehicles partially submerged in water in the aftermath of riots in Colombo, Sri Lanka. AP

Nationwide protests have been calling for the resignations of President Gotabaya Rajapaksa and his brother, who stepped down as prime minister this week, over a debt crisis that has nearly bankrupted Sri Lanka and left its people facing shortages of fuel, food and other essentials.

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After Mahinda Rajapaksa resigned, he and his family were evacuated from his official residence through thousands of protesters trying to break into the heavily guarded, colonial-era building. There was no confirmation on their whereabouts, but some protesters gathered outside a well-fortified naval base in Trincomalee on the northeastern coast claiming the Rajapaksa family was being protected there.

The Indian Embassy denied social media speculation that "certain political persons and their families have fled to India," and also rejected speculation that India was sending troops into Sri Lanka.

A Sri Lankan scrap collector searches for recyclable items near gutted buses in Colombo. AP

The country reaffirmed its support to Sri Lanka on Tuesday, saying India had extended support of $3.5 billion to help it overcome the crisis, as well sent essential items like food and medicine, the Ministry of External Affairs in New Delhi said.

President Gotabaya Rajapaksa remained in his official residence protected by layers of iron barriers guarded by the military and police.

On Monday, supporters gathered in the prime minister’s official residence to urge Mahinda Rajapaksa to stay in office. After the meeting, mobs supporting the government beat peaceful protesters who had camped out near the prime minister’s residence and president’s office demanding their resignations, as police watched and did little to stop them. Across the country, angry citizens responded by attacking government supporters and ruling party politicians.

Eight people including a ruling party lawmaker and two police officers were killed and 219 were injured in the violence, the defense ministry said. In addition, 104 buildings and 60 vehicles were burned.

Sri Lankan army soldiers patrol during curfew in Colombo, Sri Lanka, on Wednesday. AP

Pro-government mobs were chased, beaten and stripped. Some who were pushed into a lake were not allowed to get back to ground for hours. As word spread of where buses were taking the supporters, people smashed them up and set them on fire.

Toppled buses were still smoking across the capital, Colombo, as protests continued. Homes of government supporters were attacked and some businesses were set on fire, though the personal violence subsided.

Sri Lanka is nearing bankruptcy having said that it is suspending payment of $ 7 billion of foreign loans it was due to pay this year out of a $ 25 billion due by 2026. Its total foreign debt is $ 51 billion.

An army member stops vehicles at a checkpoint in Colombo, Sri Lanka, on Wednesday. Reuters

The shortage of foreign currency has led to less imports and acute shortages of essentials from food to cooking gas, fuel and medicine. For the past months people have been forced to stay in long lines for hours to buy the limited stocks and many were returning with nothing.

Protesters blamed the Rajapaksa brothers' alleged corruption and style of administration for the economic crisis.

The prime minister's resignation has created an administration vacuum with no Cabinet, which dissolved automatically with the resignation.

The president is under pressure to appoint someone who could unite everyone as the prime minister, give much of his power to Parliament and resign.

The void has also created fears of a military takeover especially if violence continues.

Associated Press