From Massachusetts State Police (verbatim):
The Massachusetts State Police Division of Homeland Security continues to monitor developments in the Christchurch mosque attacks, and we remain in contact with our federal law enforcement partners regarding the ongoing investigation by New Zealand authorities. At this time there are no specific credible threats to any mosques or other houses of worship in Massachusetts. Massachusetts State Police field units will maintain their usual high alert levels for any suspicious activity in their patrol areas, and, where applicable, increase frequency of patrols around mosques and other religious facilities. We express our condolences to the victims, their loved ones, and the communities impacted by these violent acts.