Traces of blood found in the apartment home of a missing Texas 4-year-oldhave led to a criminal charge against the girl’s stepdad for tampering with evidence of a human corpse, PEOPLE confirms.

Police won’t say if they believe the girl, Maleah Davis, is dead as they continue to search for her. But the charges filed Saturday against 26-year-old Derion Vence come amid his allegedly shifting accounts claiming he’d been knocked unconscious in a carjacking and that she had been abductedby three Hispanic men.

Police on Thursday recovered the silver Nissan Altima that Vence claimed had been stolen from him, and dogs trained to find cadavers responded “to the scent of human decomposition in the vehicle,” Harris County prosecutor Pat Stayton said at a court hearing Saturday, reports USA Today.

Also, security footage from a neighboring apartment allegedly shows Vence carrying multiple bottles of bleach in and out of the residence he shared with Davis and the girl’s mother, and then toting a full blue laundry basket containing a garbage bag, according to a spokesperson for Maleah’s mom, Brittany Bowens, reports Fox26 Houston.

Police say they recovered the laundry basket in the trunk of the Nissan, along with a gas can.

Vence had told police that he, Maleah, and his 2-year-old son were riding in the Nissan to a Houston airport about 6 p.m. May 3 to meet Maleah’s mom when he heard “a popping noise, like he has a flat tire,” Houston police Sgt. Mark Holbrook earlier told reporters.

When he pulled over to check, Vence told police a blue pickup pulled off behind him and two Hispanic men got out. As they approached, “one of them makes a comment saying that Maleah looks very nice, looks very sweet,” Holbrook said, quoting Vence’s claims to police.