UNHCR also reiterates that conditions are not yet conducive to the return of Rohingya refugees.
More than 700,000 Rohingya Muslims have fled Myanmar since its military launched a bloody campaign against them across the western Rakhine State following a number of alleged attacks on security checkpoints on August 25 previous year.
Myanmar's military says it is fighting Rohingya militants and denies targeting civilians in Rakhine state.
Gilmour said the ongoing violence makes it impossible to send Rohingya refugees in Bangladesh back to Myanmar.
"The nature of the violence has changed from the frenzied blood-letting and mass rape of a year ago to a lower intensity campaign of terror and forced starvation that seems to be created to drive the remaining Rohingya from their homes and into Bangladesh", he said in a statement, adding that new arrivals are travelling from interior Rakhine towns further from the border.
A SENIOR Bangladesh cabinet minister has accused Myanmar of obstructing efforts to repatriate roughly 750,000 Rohingya refugees, saying it was unlikely the displaced Muslims would ever return to their homeland.
"The conversation now must focus on stopping the violence in Rakhine state, ensuring accountability for the perpetrators, and the need for Myanmar to create conditions for return", said Gilmour.
There was no immediate comment by the Myanmar government.
"Myanmar army investigations found security personnel did not commit extrajudicial killings or sexually abuse and rape women and there was no unlawful detention of people, beating, killing and arson as well, " it said. Some 7,00,000 people have fled to neighbouring Bangladesh since August, BBC reported.
The agency emphasised that everyone has the right to seek asylum, just as they also have the right to return home when they deem the time and circumstances right. "We've asked Myanmar for humanitarian access in order to help people like them and others affected by the recent violence".
"UNHCR's teaming up with the International Union for Conservation of Nature to bring about safe coexistence with wildlife in the refugee settlements", Dujarric said.