Greenbelt police have arrested two men who they believe were involved in raping a woman as she walked near the Greenbelt Metro station last month, authorities said.

K’Vaughn Brandon Hines, 18, of D.C., and Sheldon Snead, 18, who has no fixed address, were both charged with first-degree rape and other related offenses in the December attack, authorities said. They are accused of forcing a 24-year-old College Park woman into the woods in the 6000 block of Cherrywood Lane and raping her, authorities said.

The woman’s injuries were severe but not life threatening, and she was able to call for help after the incident, authorities said.

Greenbelt police initially said as many as four men were involved in the attack. On Thursday, Officer Kelly Lawson, a Greenbelt police spokesman, said detectives had identified all four people but were still exploring what role the other two played. They have not been charged with any crimes.

Lawson declined to say how detectives identified Hines and Snead as suspects and what evidence they had to connect them to the rape. Snead was arrested Thursday, and Hines was arrested earlier this month, Lawson said.

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