Danbury police are searching for 42 year old David Rafael Grullon Jr in connection with a fatal shooting on Lake Avenue that killed his neighbor. Investigators say a single gunshot fired inside a townhouse traveled through a wall and struck 37 year old Victor Quispe inside his home. Quispe was taken to the hospital and pronounced dead. Police say Grullon fled the scene before officers arrived and an active arrest warrant is now issued. Anyone with information is urged to contact Danbury police.