NATICK (CBS) – Two people were hit by an MBTA commuter rail train in Natick early Friday morning and one of them died.

Transit police say a man and woman were “trespassing on the right of way” near the Speen Street bridge around 5:30 a.m. when both were struck.

Trains on the Framingham-Worcester line were stopped in both directions at the West Natick station after the incident.

The 32-year-old woman died. The 49-year-old man was rushed to the hospital with what police called “serious but non life threatening injuries.”

Their names have not been made public.

Transit Police and the Middlesex County District Attoreny’s Office are looking into what happened, but they say foul play is not suspected.

Commuters should expect delays.

Worcester Update: All trains are expected to experience significant delays west of Natick for morning commute. Psgrs should seek alt route. — MBTA Commuter Rail (@MBTA_CR) September 15, 2017

Check: MBTA Service Alerts

Keolis, the company that runs the commuter rail line, issued a statement calling the situation a “medical emergency.”

“We are working with authorities to support this investigation. Trains are able to proceed through the area, although delays are expected this morning as a result of this incident,” said Keolis spokesman Tory Mazzola.

“We are working with police and emergency officials as quickly as possible to help minimize the impact on passenger service, and we encourage Worcester Line riders to stay connected with the Keolis passenger information center to receive updates on specific trains.”

No other information is available at this point in the investigation.

WBZ NewsRadio 1030’s Carl Stevens reports