A 55-year-old man was arrested this morning in connection with a murder that occurred on Chase Street in Lynn.The victim, age 47, is believed to be his wife, said Carrie Kimball Monahan, spokeswoman for Essex District Attorney Jonathan Blodgett.It was not immediately clear when the alleged homicide occurred.The identities of the victim and suspect have not been released.The suspect is expected to be arraigned sometime today in Lynn District Court, Kimball Monahan said.