Authorities are now saying the human remains found Friday in Grimes County may be several years old.

The skeletal remains were found in a densely wooded area off County Road 234 South of Shiro.

Grimes County officials say the bones appear to be more than 10 years old, and probably never would've never been discovered had some workers who were clearing the area not stumbled upon them.

So far, authorities say no gender, race or cause of death is known.

But the remains have been sent to a forensic lab at the University of North Texas in Denton.