LOS ANGELES - Two US police officers were injured in a shoot-out with fugitive ex-cop Christopher Dorner on Tuesday, according to US media reports.

Dorner, who was on a 1-million-dollar bounty, exchanged fire with federal authorities in Southern California, and injured two police officers who were later airlifted to the hospital.

The 33-year-old ex-cop reportedly burglarized a home, tied up a couple and stole their car before the shoot-out occurred, local media quoted police source as saying.

CNN said Dorner barricaded himself inside a cabin in a California town and was "contained" by federal officers.

Dorner was fired after a police disciplinary board found him guilty of making false statement against his training officer, whom he accused of kicking a mentally-ill man during an arrest in 2007.

Authorities said Dorner killed a couple in Irvine and a police officer in Riverside and injured two others in a revenge campaign against police last week.

A statement posted on what is believed to be Dorner's Facebook page criticized racism in LAPD (Los Angeles Police Department). Media reports said police also worried he could target the Grammy award ceremony Sunday night for an attack.

A massive manhunt for Dorner began last week as police were searching from Riverside to Corona to Big Bear to Point Loma in San Diego, a large area in Southern California. They found Dorner' s abandoned car Thursday in flames in Big Bear.