FAIRFIELD — A man was struck and killed by a Metro-North train on a railroad bridge in Fairfield early Thursday morning.

Metro-North spokeswoman Nancy Gamerman said the incident happened around 12:45 a.m. between the Fairfield and the Southport train stations.

The man — who was not identified — was struck by a New Haven-bound train.

Gammerman said the man, described as a trespasser, was on a rail bridge over the Mill River when he was struck.

After being struck by the train, the man was knocked into the river and was later recovered by Fairfield first responders.

The bridge is about a quarter mile west of the Fairfield railroad station.

While train service was affected shorty after the accident, it had no effect on the morning commute.

The death came the day after a person was struck and killed near the Port Chester, N.Y. train station around 5:30 a.m. Tuesday.

That person was identified as Jose Reyes Hernandez, 35, of Port Chester.

Train service was delayed by to 40 minutes during the AM commute as MTA police investigated the accident.

Investigations will seek to determine why the two men were on the tracks when they were struck and killed.