US airspace announced that they spotted strange unknown airborne for the fourth time in a row during this week.

Escalating fears of the toxic train that derailment earlier this month led authorities in East Palestine, Ohio -USA to burn hazardous materials inside tanker cars to preempt an explosion, media reported on Monday.

The mysterious object, which officials did not describe as a balloon, was shot down at 1:45 pm US Eastern time, according to the spokesman for the US Department of Defense "Pentagon", General Patrick Ryder.

In a rare accident of its kind, a plane has a collision accident with a shuttle bus at Los Angeles International Airport, injuring five people at least.