Malaysia's top police officer warned yesterday that the mystery behind the disappearance of flight MH370 may never be solved, as a global body representing airlines said all aircraft should be continuously tracked.
"Investigations may go on and on and on. We have to clear every little thing," Inspector General Khalid Abu Bakar admitted. "At the end of the investigations we may not ever know the real cause."
He said more than 170 interviews had been conducted and there were more in the pipeline. "We need to be thorough," he said.
His words will be of little comfort to the relatives of the 239 on board the Kuala Lumpur to Beijing flight, including the Chinese families.
The probe is well into its fourth week with police still checking the backgrounds and activities of the 12 crew members on board. The 227 passengers are no longer suspects.
Meanwhile, International Air Transport Association director general Tony Tyler, a former Cathay Pacific chief executive, urged the industry yesterday to introduce real-time monitoring of aircraft around the world.
"In a world where our every move seems to be tracked, there is disbelief that an aircraft could simply disappear," he said, announcing a high-level task force to make recommendations on the matter.
"We cannot let another aircraft simply vanish."
Malaysia's Defence and Acting Transport Minister Hishammuddin Hussein will meet US Defence Secretary Chuck Hagel this week during a gathering of Association of Southeast Asian Nations members. He is expected to ask for more help in the hunt for MH370.
The Malaysian government said yesterday that the country's attorney general had been instructed to "compile evidence and advise" on possible legal action against false media reports related to the missing plane.