(NOBLESVILLE, Ind., July 9th, 2003, 10 a.m.) -- Hamilton County authorities are trying to determine if a Noblesville teen acted alone in a murder-suicide and an earlier convenience store robbery.
Police believe 17-year-old Zachary Brewer stabbed his grandparents to death in their home Friday morning, then took his own life as police arrived.
Sheriff Doug Carter said Zachary attacked Jimmy and Mildred Brewer just hours after a surveillance tape of a robbery aired on local television Thursday night.
Asked if Brewer's grandparents found out about the robbery and threatened to turn him in, police would only say they were investigating the time link between the airing of the video and the stabbings.
Police said they were not sure how many people were in the house at the time of the stabbings.