A young man has been arrested in Rajshahi over a Facebook comment that appeared to suggest a sniper could have targeted Prime Minister Tarique Rahman during his visit to the city this week. The remark was posted under a photograph of the bus that carried the prime minister, spread quickly online, and drew concern from local BNP leaders before security agencies tracked the account and detained him.

Lieutenant Colonel Faisal Ishtiaque, commander of SRB-5, confirmed on Thursday morning that the man had been detained and handed over to the police. He did not give further details. Rajshahi Metropolitan Police had not announced a case, a specific charge or the man's legal status by Thursday midday, and it was not clear whether he had been produced before a court or had a lawyer.

The post that prompted the comment was published by a Facebook page called The Beauty of Rajshahi. It carried a photograph of the bus used during the visit and a caption that questioned the arrangement: "So I understand everything! Where is our prime minister's red-and-green bulletproof bus in Rajshahi? Why a RUET bus? Do you know, people of Rajshahi?"

Beneath that post, a comment from a user account read: "What a big opportunity. Only a sniper was missing." The comment was quickly screenshotted and shared, and it is that remark that brought the authorities in.

The prime minister landed at Shah Makhdum Airport at about 3pm on Tuesday on a special aircraft. He then travelled into the city on a bus belonging to Rajshahi University of Engineering and Technology (RUET), addressed a public meeting at the historic Madrasa Maidan, visited the Dharmasabha temple for Durga Puja, and returned to the airport on the same bus. Crowds lined the route and the prime minister waved from the moving vehicle.

The choice of a university bus rather than the prime minister's own bulletproof vehicle became a talking point online because of the security normally surrounding a head of government. The page's caption treated the substitution as a puzzle rather than a security failure, but the comment beneath it changed the tone of the discussion.

Local BNP leaders condemned the remark. Mamunur Rashid Mamun, president of the Rajshahi city unit of the BNP, said such comments about the prime minister were unacceptable and that the incident should be investigated properly so that those responsible could be brought under the law, adding that peace and stability in the country had to be protected.

Ali Ashraf Masum, a vice-president of the same city unit, said party leaders were also worried by what they saw. He said the prime minister's security was a matter of the highest importance and that investigators should establish whether the comment amounted to a threat.

Rajshahi Metropolitan Police spokesperson Additional Deputy Commissioner Gaziur Rahman described the comment as extremely worrying, criminal and irresponsible. He said the matter was being treated seriously and that legal action would follow. Police have not said on what basis the comment is being treated as an offence, nor whether they consider it a threat against the prime minister or an expression of opinion.

The arrest raises questions that remain unanswered. It is not publicly known where the man is being held, whether a first information report has been filed, which legal provision is being applied, or what he has told investigators. Police have also not said whether the account has been verified as belonging to the person detained.

The episode has renewed attention on how online comments about public figures are handled in Bangladesh. The comment was posted in a public thread under a public photograph, but its wording touched on the security of the head of government, a subject that authorities treat with particular sensitivity.

The prime minister's Rajshahi programme itself passed off without incident. He distributed incentive cheques to sugarcane farmers at the Haji Muhammad Mohsin Government High School ground and met leaders of the Hindu community at the Dharmasabha temple. He was later scheduled to travel to Khulna and Bagerhat as part of the same tour.

For now, the facts are narrow: a comment, a photograph, an arrest and a promise of legal action. What happens next depends on whether police file a formal case and bring the man before a court, and on how the law is applied to a remark made on a social media thread. ScrollBeat will update this report when those details are released.