( CNN ) -- The skeletal remains of two infants were found underneath a rural Texas trailer , police said Monday , in the same area where another set of infant remains was found last year . The skeletal remains of two infants were found near a Texas trailer , police said Monday . Authorities were called about 3:30 p.m. Sunday to the trailer south of Kennedale , about 15 miles southeast of Fort Worth , Texas , in rural Tarrant County , said Terry Grisham , spokesman for the Tarrant County Sheriff 's Office . There is a group of about five mobile homes there , he said , that are leased by the property owner . One of the mobile homes had recently become vacant , and the owner was cleaning it up , Grisham said . The owner pulled back the metal `` skirt '' around the bottom of the mobile home and was `` digging around in there , '' and found a plastic bag , Grisham said . When the man opened it up , he found a box , and inside the box he found the `` bones of a very young infant , '' Grisham told CNN . He continued to look , and found another plastic container with more remains inside , of a `` similar-aged infant , '' before calling 911 , Grisham said . In 2008 , the same man called police to report that he had found a suitcase in the same area , in an overgrown field a distance away from the mobile homes , while dumping leaves . When he used a knife to cut into the suitcase , a set of infant bones were found , Grisham said . The medical examiner 's office was unable to determine a cause of death because the remains were skeletal , although no bones were broken , he said . `` We worked the thing as best we could , without any more to go on than we had , '' but the investigation stalled , Grisham said . Police have contacted the two people -- a brother and sister -- who recently moved out of the trailer , he said . The two have been cooperative with authorities , he said . They were interviewed separately , but both told police they had no idea the remains were there , Grisham said . Authorities and the medical examiner 's office remained at the scene Monday , Grisham said , and plan to use cadaver dogs at the site Monday afternoon in an effort to determine whether more remains were present . `` This ground is pretty brushy and overgrown , '' he said . A county work crew was brought in to carefully cut down the brush to aid the search , he said . CNN 's Ashley Hayes contributed to this report .
The skeletal remains of two infants found near Texas , police said Monday . Remains found in areas where other infant remains were found last year . A mobile home recently become vacant , owner was cleaning it up . In 2008 , same man told police he found a suitcase that had infant remains .