About 740,000 Muslim minority Rohingya have fled Myanmar for Bangladesh since a brutal military crackdown began in August 2017.
The UN refugee agency said the registration could serve as a tool for law enforcement to help counter human trafficking.
Many Rohingya refugees who fled said there had been mass rapes and slaughters in the villages, and in a report published last September.
Some 740,000 Rohingya Muslims fled a brutal military clampdown in Myanmar in August 2017 and arrived in Bangladesh to join another 300,000 already living in the refugee camps.
Supporters believe the pair were punished for investigating a massacre of 10 Rohingya in Myanmar's western Rakhine state in September 2017.
The 12 people were found in the residence of a woman who claimed that her cousin who lives at Tahan in Myanmar had asked her favour to keep the 'guests' before being taken to the neighbouring country.
The police official said that one Lal Bahadur, who was accompanying the 23 Nepali girls, has been arrested.
Mark Lowcock said that Rohingya Muslims felt that the country wasn't a safe place to return as they demanded to be assured of things like freedom of movement and access to amenities.
A case has been registered against Abdul Wahab, the AIMIM corporator from Chandrayangutta, for allegedly encroaching upon Gurram Cheruvu, sheltering Rohingyas and running shops.
The lawyer representing Reuters told that the journalists were victims of a police set-up to silence their truthful reporting.