BOGOTA (Xinhua) -- Colombia's biggest rebel group, the Revolutionary Armed Forces of Colombia (FARC) Friday denied any links to Monday's car bomb attack, saying that the authorities' "ungrounded accusation" was aimed at deceiving the media.

In a statement published via the Internet, FARC denounced the terrorist attack, saying that the remnants of some paramilitaries were behind the bloodshed.

The car bomb exploded early Monday in front of the police headquarters in the city of Cali, about 300 km southwest of Bogota, killing one passing taxi driver and injuring 39 others, including about 20 police officers.

"Although we cannot rule out other illegal groups, ... the first theory we're going with is that it's the work of FARC," the region's governor Angelino Garzon was quoted by media as saying on Caracol radio.

FARC, which has been fighting the government since the mid-1960s, is reported to have 20,000 fighters.

The country has been locked in a four-decade civil war, the longest in Latin America, between government forces, leftist guerrillas and far-right paramilitaries. The conflict kills more than 3,000 people annually.