A $4,000 reward is being offered for information that leads to an arrest in the killing of two women in west Baltimore last month. Sherril Armstead and Natalie Wright (both, pictured) were killed on Dec. 21 in the 1200 block of West Pratt Street, police said. Sign up for our Newsletters No further information was immediately released. Anyone with information is asked to call Baltimore police at 410-396-2100 or Metro Crime Stoppers at…