Two pedestrians were hit by vehicles Monday on I-75 and one died, in separate accidents.

A man was hit by a tractor-trailer and killed just before noon on I-75 southbound near Locust Grove Road in Henry County, Henry police Lt. P. Bratton said.

Earlier in the day, a woman was injured when she was struck by a car while standing on the Downtown Connector.

Bratton told The Atlanta Journal-Constitution that investigators had not determined why the man in Henry, later identified as 52-year-old Alan Bryan Fletcher of Locust Grove, was in the roadway. They didn’t know whether Fletcher had been driving and broken down or had just stopped, Bratton said.

The truck driver stopped after hitting Fletcher, he said.

All southbound lanes of the interstate were blocked for about an hour while police investigated that accident.

According to the Georgia State Patrol, the unidentified woman hit in Atlanta was standing in the second lane from the right on I-75/85 southbound near Fulton Street when she was hit around 10:30 a.m.

Several vehicles swerved to miss the woman, but she was eventually hit by a Kia Optima.

The woman was unconscious when taken to Grady Memorial Hospital, but the extent of her injuries was not immediately known.