Police have made an arrest in connection with the killing of a 27-year-old Google employee last summer as she was out jogging in broad daylight in Massachusetts.

Vanessa Marcotte went for a jog on Aug. 7 near her mother’s home in the town of Princeton, about 60 miles west of Boston.

She never returned, and her body was found that night in a wooded area about a half mile from her mother’s house.

Authorities announced at a press conference Saturday afternoon that they had arrested 31-year-old Angel Cordero Ortiz in connection with the crime.

"We got him," Worcester County District Attorney Joseph Early Jr. said. "This has been a roller-coaster all along."

Early said Ortiz’s DNA matched a sample collected from Marcotte’s hands on Friday afternoon. Authorities picked up the suspect from his residence late Friday and subsequently arrested him after interviews, according to Early.

Ortiz is expected to be arraigned in district court on Tuesday. Early said initial evidence suggest Ortiz is from the area where Marcotte was killed.

Police have said Marcotte was likely attacked between 1 p.m. and 3 p.m. local time on Aug. 7.

Police sources have told ABC News there were signs Marcotte was sexually assaulted and that there were burns on parts of her body.

Marcotte may have struggled with her killer, according to the Worcester County District Attorney’s Office. The unknown killer, only identified as a man, received scratches, scrapes and bruises during the struggle.

Early has said Marcotte, an account manager at Google in New York, frequently visited Massachusetts and was planning to return to New York City on the day of her death.

A Google representative described Marcotte in a statement as "a much loved member of the Google team" who was "known for her ubiquitous smile, passion for volunteer work and love of Boston sports. We are deeply shocked and saddened, and our thoughts are with her family and friends."

Her alma mater, Boston University, has paid tribute to her as well. "We’re so terribly sad for her family and friends," Colin Riley, the executive director of media relations at Boston University, told ABC News in August. "They’re in our thoughts and prayers."

Marcotte was murdered just five days after another female jogger was killed in the New York City borough of Queens. Police said Karina Vetrano, 30, was strangled to death on Aug. 2, while out for a jog along a path she often ran with her father.

Authorities in New York and Massachusetts do not believe the murders of two young women are related, but police in both states have been working together to solve the mysteries surrounding their deaths.

Early has said, "we haven’t ruled anything out," in regard to the similarities in the two cases.

ABC News’ Benjamin Stein and Aaron Katersky contributed to this report.