Wichita police are investigating the death of a homeless man, who they say might have frozen to death under a bridge.

Police found the man’s body under the bridge Sunday afternoon after being called to check on his welfare. The man, who is believed to be in his 50s or 60s, was pronounced dead at the scene.

The bridge is just south of Wichita’s Riverside park.

The coroner will determine the man’s cause of death but police say there were no obvious signs of trauma.