Police and federal investigators continue to look into what led to a tragic plane crash on Tuesday afternoon.
CBS News confirmed that the FBI is looking into whether or not the crash was "intentional."
One person was killed and another was hurt when the small plane crashed onto Main Street in East Hartford.
East Hartford police said they expect to release more information later in the morning.
Main Street at Willow Street Extension remained closed on Wednesday morning, some 14-hours after the two engine plane hit the roadway. Investigators continued their work at the scene.
Very little from the wreckage is recognizable, they said. There were only remnants of the aircraft that barreled into the ground around 3:30 p.m. Tuesday afternoon.
"The evidence specific to the wreckage is going to take some time to process, so the site itself has not been taken apart," said Lt. Josh Litwin, East Hartford Police Department.
Officials said there were two men aboard. One of them died in the crash, the other was rushed to a nearby hospital. As of Wednesday morning, it was unclear which one of them was flying when the plane began to fall from the sky.
"As far as the occupants of the plane, he is expected to survive," Litwin said. "He is cooperating with investigators. He's actually speaking with detectives as part of this investigation is ongoing."
The plane had left Brainard Airport in Hartford and was on its way back when it went down.
Two other people were rushed to the hospital after watching the plane crash in front of their vehicle. They were not hurt, but were in shock, police said.
Eyewitnesses said the aircraft exploded on impact. They said the crash happened in a crowded area.
Investigators said traffic will continue to be impacted Wednesday morning.
The Federal Aviation Administration and National Transportation Safety Board said they will have a joint investigation with East Hartford officials to determine what led to the crash.
East Hartford public school officials sent notices to parents warning them that bus traffic will also be delayed as they try to get around on Wednesday morning.
For more photos from the scene, click here.
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