The BBC website has a bit more info. Up to six killed including three on the ground.
The plane, a Rockwell International Turbo Commander 690B, crashed at about 11:25 local time (15:25 GMT) as it approached the airport in rainy weather, say officials.
Tweed's airport manager said the pilot had been speaking to air traffic control, but did not issue any distress calls.
"All we know is that it missed the approach and continued on," said Lori Hoffman-Soares. "There were no distress calls as far as we know."
Sounds like a classic case of the Somatogravic illusion.