Suspected rebels launched homemade bombs at a police station and nearby homes in a southwest town near the border with Ecuador, killing seven people, authorities said Monday. More than a hundred fighters with the Revolutionary Armed Forces of Colombia, or FARC, fired at least a dozen bombs toward the police station Sunday night in San Miguel, 340 miles southwest of Bogota, said Col. Humberto Guatibonza, police chief in Putumayo state.The bombs, fashioned by packing explosives into empty gas cylinders, are launched from ramps, and are difficult to aim with any degree of accuracy. Four police officers, two civilians and one army soldier were killed in the attack, he said. Six people were injured and several homes near the station were destroyed by the bombs.