By BILL MILLER An Alvarado man was in the Johnson County Jail Monday, facing a murder charge in connection with the Jan. 31 fatal shooting of 43-year-old Rodolfo Sanchez, police said.Joel Anderson, 28, was arrested Saturday in Midlothian after a nearly weeklong investigation into the shooting of Sanchez, also from Alvarado, according to a news release from Police Chief Josh Vincent.The motive for the shooting was still unclear on Monday.Sanchez was shot late on the evening of Jan.