Relatives of passengers aboard missing flight MH370 Friday demanded Malaysia accept a US exploration firm's offer to take up the hunt for the aircraft, which was suspended this year.
No trace of the Malaysia Airlines plane, which disappeared in March 2014 with 239 people on board, most of them Chinese, was found during a lengthy deep sea hunt in the southern Indian Ocean off western Australia.
Ocean Infinity, a seabed exploration firm with a fleet of advanced underwater search vehicles, confirmed last week it had offered to resume the hunt.
Malaysian authorities have said discussions are ongoing and the firm only wants payment if the aircraft is found.
Voice 370, an international group of MH370 next-of-kin, urged authorities to take up the offer, saying in a statement, "Why hasn't Malaysia accepted this win-win offer?"
The group said the offer was made more than four months ago and it should be accepted "without further delay," and urged authorities to provide them with details.
Neither Ocean Infinity nor the Malaysian government has said when the proposal was made.
Malaysia's Deputy Transport Minister Aziz Kaprawi previously said the agreement of Australia and China would be needed for a deal to be reached. China and Australia were both involved in the search, which was halted in January.