READING – Berks County authorities have launched an investigation after a police officer shot and killed a man armed with a knife. On Monday around 2:15 p.m., a female called 911 to say a man with a knife had threatened her in her home in the 700 block of Wagon Wheel Lane in Muhlenberg Township. Police found the male brandishing a knife inside a 2nd floor bedroom. Authorities say the suspect refused to drop the weapon and an officer discharged his Taser, which had no effect. That’s when a second officer fired once, hitting the suspect, who was taken to Reading Hospital, where he died. His name has not been released. Anyone with information regarding the incident is asked to contact the Berks County Detectives at 610-478-7171.