(Updated at 8:45 p.m.) An arrest has been made after a deadly stabbing at the Pentagon Metro station Monday morning.

The incident happened shortly before 9 a.m. According to initial reports, a person was stabbed in the neck on one of the platforms. Police are now looking for the suspect.

The victim was pronounced dead at a local hospital, Metro Transit Police said later Monday morning. The station was closed for a police investigation, with trains bypassing the station, but reopened around 2:30 p.m.

Trains are bypassing Pentagon Station in both directions due to the ongoing police investigation. Preliminary suspect information has been established and an investigation is ongoing. (2/2) — Metro Transit Police (@MetroTransitPD) March 16, 2020

This is the second reported homicide in Arlington so far this year.

A passerby described to ARLnow a gruesome scene.

“I walked when the police were running into the Metro,” said the witness. “I almost stepped in the blood and looked over to see the man lying motionless on the ground… [there was] blood everywhere on the ground.”

That was repeated by others on social media:

@fox5dc A man was bleeding on the ground at the Pentagon metro. He was just removed on a stretcher by medical personnel. — Roxann (@roxyus) March 16, 2020

Monday night, Metro Transit Police reported that they had made an arrest in the case: a 27-year-old man who will now face second degree murder charges.