In January 2017 a car was driven onto the Rail Trail in Newburyport and set on fire.
http://www.necn.com/news/new-england/PD-Car-Driven-Onto-Rail-Trail-Intentionally-Set-on-Fire-412248873.html
 
In December 2016 there was a serious incident on the Upper Charles River Rail Trail where a woman was hit on the head from behind, knocked to the ground and attacked while jogging.
http://www.fox25boston.com/news/police-woman-assaulted-on-upper-charles-trail-in-milford/476840898
 
In November 2016 an adult male who declined to turn over his money along the Quequechan Rail Trail was shot in the back of the head with a BB gun.
http://www.heraldnews.com/news/20161125/man-shot-in-head-with-bb-gun-during-attempted-robbery-in-fall-river
 
In October 2016 a woman was walking on the rail trail when she was approached by a man on a bike, police said. Police say the man exposed himself and tried to grab the woman.
http://www.wcvb.com/article/bicyclist-exposes-himself-to-woman-tries-to-grab-her-police-say/8280075
 
In July 2015 a woman in her early 30s, told police that she was running on the rail trail near Scoville Road when a man came up behind her, grabbed her, pulled her off the path and sexually assaulted her.
http://www.courant.com/breaking-news/hc-avon-sex-assault-arrest-0707-20150706-story.html