KUALA LUMPUR, March 28 — A Pakatan Rakyat MP today declared that they would be able to find missing Malaysia Airlines flight MH370 if they are put in charge of the country's air force or navy.

DAP's Segambut MP Lim Lip Eng, who was responding to a challenge by former MCA president Datuk Seri Dr Chua Soi Lek, was confident they can better manage the search operation which entered its 21st day.

"It's very simple. Make one of DAP's leaders the commander of the air force or navy, then we will find MH370," he said at a press conference after he and several other DAP leaders lodged a police report against MCA Wanita chief Datuk Heng Seai Kie.

Yesterday, Dr Chua slammed PR for exploiting the MH370 crisis, saying it was "disgusting and dirty politics" to score political points when the Barisan Nasional-led government had done everything in its power to find the Malaysia Airlines-owned Boeing 777-200.

If PR believes that it can better deal with the situation, then it should launch its own search for the plane "which could not be found by 26 countries despite having the most advanced technology", he added.

Lim today denied that PR was milking the crisis for political mileage or stoking Chinese sentiments against the Malaysian government.

He said neither DAP nor PKR had anything to do with inflammatory remarks posted on social media sites that attacked the Malaysian government over its handling of the incident, as claimed in a posting allegedly put up on Heng's Facebook page.

The post, written in Chinese script and posted on Wednesday morning, accused DAP and PKR of stoking anger among Chinese citizens against the Malaysian government and allegedly cursed all DAP and PKR members and their families with death.

"We want the police to arrest Datuk Heng right away, and if she did not make the post, we want the police to arrest the person who posted that comment.

"Whoever makes such a statement should face the music, regardless of whether it is from PR or BN," he said, adding that they will also lodge a report with the Malaysian Communications and Multimedia Commission (MCMC).

MH370 and the 239 people on board disappeared less than an hour after the Beijing-bound flight left Kuala Lumpur International Airport at 12.41am on March 8.

The search now has been narrowed down to a vast area in the southern region of the Indian Ocean, where satellite imagery from several countries sighted numerous objects believed to be related to the missing plane.

Families of the 153 Chinese passengers, however, have blamed the Malaysian government of hiding information related to the search, with some accusing Malaysian authorities of being murderers.