Police report reveals threats made by Memorial Drive shooting suspect before rampage

Police documents reviewed by NewsCenter 5 reveal new details about the days and hours before a Boston felon allegedly opened fire with a rifle along Memorial Drive in Cambridge on Monday afternoon.

Tyler Brown, the alleged shooter, reportedly made threats of self-harm and displayed a weapon during a FaceTime call with his parole officer hours before the incident, according to a police report.

Statements documented by Massachusetts State Police in the report include, “These people are gonna (expletive) pay” and “I’m not going back to prison.”

Brown pleaded guilty in 2021 to charges including armed assault with intent to murder and attempted assault and battery by means of discharging a firearm for firing at a Boston police officer. At the time of that shooting, in May 2000, Brown was on probation in connection with a 2014 conviction.

He was sentenced to a prison term of 5-6 years. Brown was released on parole in March 2025.

5 Investigates reviewed paperwork from that parole decision, which revealed the board was aware that Brown suffers from a mental health disorder with post-traumatic stress disorder, depression and anxiety. A board member wrote that Brown was taking medication and showed remorse for his actions. Terms of his release included electronic monitoring for 90 days, drug testing and mental health counseling — among other mandatory conditions.

Read more: WCVB