Some unidentified men have detained a journalist of British Broadcasting Corporation (BBC), Aung Thura, while performing duties outside a court in the capital in Myanmar amid protests against military coup in the country.
According to a BBC report, Aung Thura was taken away by men in plain clothes with another reporter, Than Htike Aung, who works for the local news organisation Mizzima. Mizzima's operating licence was revoked by the military government earlier this month.
The men who detained the journalists arrived in an unmarked van at around midday local time (05:30 GMT) on Friday and demanded to see them. The BBC has been unable to contact Aung Thura since.
The BBC said in a statement that it was extremely concerned and called on the authorities to help locate him.
"The BBC takes the safety of all its staff in Myanmar very seriously and we are doing everything we can to find Aung Thura," the corporation said in a statement.
"We call on the authorities to help locate him and confirm that he is safe. Aung Thura is an accredited BBC journalist with many years of reporting experience covering events in Nay Pyi Taw."
Forty journalists have been arrested since a military coup on February 1, which saw the detention of elected civilian leaders including Aung San Suu Kyi. Sixteen are still in custody, and the military has revoked the licences of five media companies.
The eight people killed on Friday were shot dead by security forces in the central town of Aungban, according to a funeral director and local media.
"Security forces came to remove barriers but the people resisted and they fired shots," a witness told Reuters news agency.
Reports from Yangon say the streets have been congested as many people try to flee violence in the country's main city. Police there are also said to be forcing people to remove barricades put up by protesters.
Post-coup violence has claimed the lives of at least 232 Burmese, the Assistance Association for Political Prisoners activist group says. One of the bloodiest days was 14 March when 38 were killed.