Air and sea searches are underway after a military transport plane with 104 people aboard went missing Wednesday on a flight from Myanmar to Yangon, a military spokesman said.

The Y-8 turboprop aircraft had 90 passengers -- mostly families of military personnel -- and 14 crew members when it lost contact after takeoff, according to The Associated press.

The bulk of its route would have been over the Andaman Sea. It was raining at the time of takeoff, but not heavily, the AP said.

The plane took off from Myeik at 1:06 p.m. Wednesday, June 6 and contact with it was lost at 1:35 p.m., when it was last seen on radar about 32 kilometers (20 miles) to the west of Dawei, formerly known as Tavoy, according to information on the Facebook page of military commander Senior Gen. Min Aung Hlaing.

"Four naval ships and two military aircraft have been searching for the plane since 2:00 p.m. up until now," the announcement said.