Police believe the fatal shootings of a Boston teen and his mother this month are linked to another killing police wanted him to testify about.
The Boston Globe reports that 17-year-old Elvis Sanchez and 43-year-old Elvira Pimentel were killed after the teen appeared at a courthouse where investigators wanted him to testify before a grand jury.
The grand jury was looking into a June 5 killing at a housing development near Sanchez's home that Sanchez was believed to have knowledge about. But the Globe reports it's unclear what, if anything, Sanchez told authorities about the case.
The Aug. 7 killings of Sanchez and Pimentel have renewed concerns about the risks of providing police with information about crimes, a persistent problem in many Boston neighborhoods.
This program aired on August 19, 2011. The audio for this program is not available.