Waltham Police detectives and FBI investigators identified and arrested a suspect in the series of e-mailed bomb threats made in late August against Waltham public schools and city offices, the Waltham Patch reported on Oct 6. 

According to the report, 24-year-old Ryan S. Lin of Newton was charged on one count of cyberstalking. 

Lin targeted his former roommate, a 24-year-old woman residing in Waltham, in his cyberstalking campaign that began in April 2016. In addition to the bomb threats to institutions in her residential community, Lin also allegedly made false reports directly to law enforcement that the woman had bombs in her household, according to the Patch. He also allegedly created a social media account with the woman’s name, with posts written threatening to “shoot up” a local school, the Patch reported. 

Allegedly, he had previously hacked the victim’s online personal accounts, stolen private photos and sensitive information and created fraudulent online profiles with her name and address that solicited violent sexual activities. 

Lin appeared in U.S. District Court in Boston on Friday and is being held without bail, pending his upcoming hearing tomorrow. He faces up to five years in prison and three years of supervised release, reported the Patch. 

Authorities have not publicly confirmed whether Lin is the sole individual responsible for all the bomb threats that occurred over the past several months, primarily against public schools. More than 80 bomb threats were reported in September alone, with the threats continuing this month, according to the Patch. 

On Aug. 23, the University was evacuated following an emailed bomb threat, and on Aug. 31 two dozen bomb threats were sent across the city. 

 —Michelle Dang