Pubdate: Mon, 2 Nov 1998 Source: Associated Press Copyright: 1998 Associated Press Author: Frank Bajak Associated Press GUERRILLAS ATTACK POLICE GARRISON IN STATE CAPITAL BOGOTA, Colombia -- Fighting raged all day Sunday in a remote southeastern town after about 800 leftist rebels attacked a police base, killing at least four police officers, wounding nine and cutting off communications. The guerrillas of the Revolutionary Armed Forces of Colombia, or FARC, rained homemade missiles on the police garrison in Mitu, capital of Vaupes state, where 120 officers were stationed, Gen. Rosso Jose Serrano told a news conference. Serrano said the last radio contact with the garrision was at 2 p.m., eight hours after the attack began. Such missiles, fired from modified propane gas cylinders, were used in an Aug. 3 assault that leveled a police anti-narcotics base in the same region. Authorities said warplanes and Blackhawk helicopters were sent to aid the besieged garrison but couldn't land at the town airport, which had been seized by the rebels. Reinforcements were not expected until dawn Monday. Serrano told reporters he could not confirm rumors of 60 dead police officers. ``Only when the reinforcements arrive can we determine the losses,'' he said. The death toll was exected to rise, however, and it was feared dozens of police had been captured. Serrano said the rebels blew up Mitu's microwave tower at 5 a.m., cutting off telephone communication, then attacked the police station. Mitu, a city of 15,000 people near Colombia's border with Brazil, can only be reached by air and water. Though no soldiers are based in Mitu, its police post is well fortified and surrounded by barbed wire and trenches, army spokesman Capt. Orlando Castano said. The attack comes exactly a week before the government has promised to withdraw all troops from a huge area of southern Colombia -- 16,200 square miles -- to meet a FARC condition for getting peace talks under way. FARC is the South American nation's largest and oldest rebel group. No date has been announced for the talks and a letter from FARC commander Manuel Marulanda to the government's chief negotiator, released Sunday, alleges efforts were under way to undermine any attempt to convene them. In the letter dated Oct. 20, Marulanda says ``the military high command has created special commando units to sabotage the beginning of the dialogue,'' accusing them of planning to kill him and President Andres Pastrana at an inaugural ceremony. In the letter, which was sent to the Radionet network, Marulanda indicated hooded soldiers were searching vehicles in the region. The government's chief negotiator, Victor G. Ricardo, told The Associated Press on Sunday that he had not received the letter. Ricardo returned 46riday with Pastrana from a three-day state visit to Washington. The federal ombudsman said last week that paramilitary gunmen -- private armies that have been linked to the military and kill alleged guerrilla sympathizers -- had entered the zone and could imperil peace talks. Before Sunday, the FARC was holding at least 248 soldiers and police officers captive. It has asked the government to exchange them for 452 jailed rebels before peace talks commence. So far, Pastrana has refused. - --- Checked-by: Mike Gogulski