The pilot of the private jet that crashed early Thursday morning in Tierrasanta, killing all six people on board and injuring eight people on the ground, did not declare an emergency or call in any type of mechanical issue with the plane before it clipped a power line and slammed into a residential street, federal authorities said Friday.

A small plane crashed into a San Diego neighborhood during foggy weather early Thursday, setting about 15 homes fire and evacuating homes along several blocks, authorities said.