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He was shot on the streets of Dhaka, the Bangladesh capital, last Friday while riding on a rickshaw. Two men on a motorbike followed Hadi and one shot him before they fled the scene. After days of treatment in Dhaka, he was flown to Singapore in critical condition.

Authorities have said they identified the suspects and that the shooter had most probably fled to India — remarks that sparked a new diplomatic squabble with India and prompted New Delhi this week to summon Bangladesh's envoy to express its condemnation. Bangladesh also summoned the Indian envoy to Dhaka and sought clarification.

Hadi was a fierce critic of both neighboring India and former , whose 15-year rule of Bangladesh ended in last year's uprising.

Hadi had planned to run as an independent candidate in a major constituency in Dhaka in the next national elections which the country's .

Since Hasina's ouster, the Inqilab Moncho group has promoted anti-Indian sentiment in the Muslim-majority country. Hasina now lives in self-imposed exile in India.

Witnesses and media reports said hundreds of protesters took to the streets of Dhaka immediately after the news of Hadi's death, rallying on Shahbagh Square near the Dhaka University campus where many chanted slogans such as Allahu Akbar, or God is great in Arabic. There were also similar protests elsewhere in the country.

Later, a group of protesters gathered outside the head office of the country’s leading Bengali-language Prothom Alo daily in Dhaka’s Karwan Bazar area. They then surged into the building, according to online portals of various leading media outlets.

A few hundred yards away, another group of protesters pushed into the premises of the country’s leading English-language Daily Star and set fire to the building, according to footage from Kaler Kantha, another mainstream newspaper.

Soldiers and para-military border guards deployed outside the two buildings but did not take any action to disperse the protesters. Security officials tried to convince them to leave peacefully as firefighters arrived at the scene outside the Daily Star building.

The blaze trapped the newspaper's staff working inside the building late Thursday. One of the Daily Star's journalists, Zyma Islam, wrote on Facebook that she was inside the building.

“I can't breathe anymore. There's too much smoke," she said.

The attack on Hadi is still being investigated, but the shooting has set off tensions. Human Rights Watch and Amnesty International have recently expressed concerns over violations of human rights in Bangladesh.

The country's interim leader, Nobel Peace Prize laureate Muhammad Yunus, who took over three days after , promised in a televised address to the nation late Thursday to punish Hadi's killers.

He announced that Saturday would be a day of mourning and urged the citizens to stay calm.

Yunus' critics and Hasina's former Awami League party have blamed the interim government for in Bangladesh, a parliamentary democracy with a history of political violence.

The interim government has banned all activities by Hasina's party, including its running in the February election. Last month, a Bangladesh on charges of crimes against humanity involving the uprising.

On Wednesday, anti-India protesters attempted to march toward the Indian High Commission in Dhaka, prompting it to close its visa section. After Hasina's ouster India stopped issuing tourist visas to Bangladeshis, citing security concerns, but continued giving visas for medical treatment in India.

On Thursday, protesters in the southwestern city of Rajshahi tried to march toward the office of a regional Indian diplomat. Police stopped both marches.