"We got him", Early said. DA Early said an alert state trooper in Worcester saw a man and a auto that matched the Marcotte murder suspect's description, and did a cheek DNA swab test that eventually led to Ortiz's arrest. Her body was later found in the woods less than a mile from the home.
According to WCVB, a source close to the investigation said Marcotte was found without her clothes and had burns on her head, feet, and hands.
Angelo Colon-Ortiz, 31, was arrested late Friday and faces charges of aggravated assault and assault with intent to rape, according to Early.
The New York City Google employee was visiting her mother in Princeton, Massachusetts when she went jogging on the afternoon of August 7, 2016. There were also signs that she had struggled with her attacker. Katrina Vetrano was sexually assaulted and strangled to death during an afternoon run near her parents' home in Queens, New York. He eventually obtained a DNA sample from the driver, identified as Ortiz, and it was a match.
Marcotte grew up in Leominster and was a Boston University graduate who worked for Google.More news: Trump says US not going to get involved in Syria
"It was through (Marcotte's) determined fight and efforts that we obtained the DNA of her killer", Early said.
Sources said Ortiz was being held at the State Police barracks in Millbury, and is due to be arraigned on Tuesday. They added that the suspect was likely the same person driving a dark-colored SUV in the area around the time Marcotte was murdered.
Another woman who lives in the area said the community will feel relieved that "justice is about to start".
State police detectives and local police previously said they received over 1,000 tips in the case.