MANILA, Philippines - The Palace is satisfied with the explanation of the US Embassy on the recovery of a US drone from Philippine waters.

“The information that we have is that that was not a drone that was used in Philippine waters. I think, you’re familiar with reports that it was used in a US naval training exercise outside the Philippine waters so we have no reason to doubt that explanation at this point,” Presidential Communications Development and Strategic Planning Office (PCDSPO) Secretary Ricky Carandang said.

“We’re satisfied with the explanations that have been given to us so far," he added.

Carandang however said that the investigation of the Presidential Commission on the Visiting Forces Agreement (PCVFA) into the incident will continue.

US embassy spokesman Tina Malone earlier said the drone, with model number BQM 74-E, was released by a US ship off the coast of Guam in September last year during a military exercise.

"The unarmed target drone that washed ashore off the coast of Masbate Island is an expended BQM-74E Aerial Target drone that was launched from the USS Chafee during exercise Valiant Shield 2012 on September 19, 2012 off the coast of Guam," said Malone.

"It appears that ocean currents brought the drone to where it washed ashore last week off Masbate Island," she added.

Fishermen found the 3.65 meter (12-foot) drone floating off Masbate island and dragged it to shore on Monday.