DHAKA: A Japanese farmer shot dead by suspected Islamist militants in Bangladesh was buried in a Muslim graveyard on Tuesday after a cleric testified that he had converted to Islam, officials said.

Hoshi Kunio was shot dead by three men on a motorbike who stopped his rickshaw on a dirt road last week, an attack later claimed by the self-styled Islamic State (IS) group.

The 66-year-old had settled in Bangladesh, where he had leased land to farm, and was living in the northern city of Rangpur.

His murder came just five days after an Italian aid worker, Cesare Tavella, was shot dead in similar fashion in the Bangladeshi capital Dhaka, an attack also claimed by IS.

"He was buried in the city's Munshipara graveyard early Tuesday morning," Rangpur city police chief Abdur Razzaq told AFP.

Priyasindhu Talukdar, a government official in Rangpur, said Kunio was buried in a Muslim graveyard, adding, "We got confirmation that he had converted to Islam before his death."

"We held his funeral prayer and then buried him in the graveyard in accordance with Muslim rites. The Japanese embassy in Bangladesh approved the burial and two Japanese officials were present," Talukdar told AFP.

Japanese embassy spokesman Takeshi Matsunaga confirmed Kunio had been buried in Bangladesh. Bangladesh prides itself on being a mainly moderate Muslim country.

But the gruesome killings of a series of atheist bloggers this year have rocked the nation and sparked a crackdown on local hardline Islamist groups.

Experts say militants pose a growing danger in Bangladesh, warning that a long-running political crisis has radicalised opponents of the government.

However, experts have also expressed scepticism about the IS claim of responsibility in the murders of Kunio and Tavella.

Also read: Japanese man shot dead in Bangladesh days after ‘IS attack’