Houston Police are investigating four deaths in downtown Houston, all reported within a 12-hour span.

HPD says no foul play is suspected in any of the cases and they are awaiting autopsy results.

One woman was found deceased at Tranquility Park on Rusk Street around 9 am Monday morning. Around 1 pm, a deceased person was reported at the intersection of Congress and Milam Streets. That case did not initially appear suspicious, but the Medical Examiners has been assigned to investigate.

Late Monday afternoon, Houston Fire crews were checking areas of downtown known to be occupied by the homeless, when they found a man and woman deceased under an overpass near Cogress Street and Hamilton Avenue. No foul play is suspected in that case either.

HPD did not confirm is cold exposure played a role in the cases and they are awaiting the autopsy results.

Temperatures on Sunday night and Monday evening reached around 25 degrees in Houston.