POLICE are investigating reports of a mass grave in Texas containing dozens of bodies following a tip off to police.

Cops were called to a house where dismembered remains of 25 to 30 people including children were thought to be found.

Police activity was focused on a rural area of fields and a small wooded zone, with police positioning themselves near a house surrounded by trees.

A neighbour said the occupant of the house lived there with her fiance but moved out of the property a week ago. Her parents also lived at the house but were long-haul truck drivers.

Police rushed to the property between Hardin and Daisetta, Liberty County, and are now seeking a search warrant to search the home after finding blood at the scene.