Najib confirmed that Malaysian air force defence radar picked up traces of the plane turning back westward, crossing over Peninsular Malaysia into the northern stretches of the Strait of Malacca. Authorities previously had said this radar data could not be verified.
The air force has yet to explain why it did not spot the plane flying over the country and respond. The search was initially focused on the Gulf of Thailand and the South China Sea, where the plane severed its communication links. That search has now ended.
“One thing that does bother me greatly is the fact that unidentified aircraft could navigate back over Malaysia and out to sea without a physical or material response to that fact,” said Britain-based aviation security consultant Chris Yates. “They were not watching.”
source: Huffington Post