Manila, July 11 -- All four on board a trainer aircraft involved in an "incident" at Iba Airport on Friday are safe and brought to a hospital, the Civil Aviation Authority of the Philippines (CAAP) said.

CAAP, however, did not indicate if the aircraft had crashed or the exact location of the incident.

"We cannot identify the nature of the incident yet because the investigation is still ongoing," CAAP information officer Bea Bernardo said.

The Cessna aircraft with registry RP-C2211 was conducting a training flight from Subic when the incident occurred, according to CAAP.

"All individuals on board are conscious and are being brought to a nearby hospital for further medical evaluation," it added.

The Aircraft Accident Investigation and ...