DAP has urged Foreign Minister Anifah Aman to answer over the alleged back door efforts in brokering a deal to repatriate and drop charges on a Malaysian diplomatic attache accused of sexual assault in New Zealand.

The party's international affairs bureau said it would unequivocally condemn any efforts to stifle justice and efforts by any party to hide the truth from the public, both locally and internationally.

"It must also be answered whether or not the Foreign Ministry denied New Zealand’s request to waive the alleged Malaysian offender’s diplomatic immunity," said the bureau's executive secretary Howard Lee and international secretary Sivakumar Varatharaju in a statement.

DAP, they added, is firmly against the Malaysian government's request to exercise diplomatic immunity under these circumstances as it is against natural justice.

"The foreign minister must also answer on the allegations of his ministry’s unreasonable requests for the charges of such serious accusations to be dropped," they said.

The case involves armed forces officer Muhammad Rizalman Ismail ( left ) who was accused of sexually assaulting a woman in New Zealand.

Meanwhile, Lee and Sivakumar noted that the accusations are serious and risk souring the good relationship with New Zealand.

"Therefore situation of such sensitivity and severity must be handled with utmost care, urgency and transparency.

"DAP urges the Malaysian government to work in full cooperation with the New Zealand authorities in answering what they have expressed to be a 'strong preference' for extradition of the accused  to stand up to the accusations against him through the legally provided processes in New Zealand," they said.