TIMELINE: How police shooting in Lockyer Valley unfolded

POLICE are still hunting for the person suspected of killing a police officer in the Lockyer Valley this afternoon.

Details have emerged about how the situation unfolded.

The first signs of an emergency were reports from Toowoomba residents about 2.50pm on Monday that multiple police cars, ambulance units and fire trucks were heading from Toowoomba and converging on the scene.

The Chronicle reported about 3.10pm police were responding to a critical incident.

Shots were fired at police and a police vehicle was involved in a traffic incident. 

The suspect is believed to have fired shots at a police helicopter. 

An emergency situation was later declared and residents warned an armed man was on the run.

About 4pm the first reports emerged that the officer had died.