The Grayson County Sheriff's Department is investigating a meth lab that was discovered at a residence at 1403 Caney Creek Road, just off Highway 187.

According to Bryan Hammons, a detective with the Grayson County Sheriff's Department, the meth lab was found on January 2.

"A woman ( her name was not released) had been renting the house," Hammons said, "and after being away from the home for several months, she returned to find some things that had not been there before."

After being alerted to what the woman found, authorities with the Sheriff's Department and Hardin County Drug Task Force discovered what Hammons described as "an active meth lab."

"We found starting fluid cans, Mountain Dew bottles with tubing and pretty much everything it takes to manufacture meth inside and outside the residence," Hammons reported.

While the Sheriff's Department has several good leads as to who is responsible for the meth lab, they have not released the names of any suspects.

According to Hammons, they expect to make an arrest over the course of the next week or two.

Hammons also released on Monday a list of warning signs that may indicate the presence of an operational meth lab.

"Many people may be living next to a meth lab and not even know it," Hammons said.

Here are some things to watch out for:

Unusual strong odors (like cat urine, ether, ammonia acetone or other chemicals)

Residences with windows blacked out

Renters who pay their landlords in cash (most drug dealers deal exclusively in cash)

Large amounts of traffic-people coming and going at unusual hours

Excessive trash, including large quantities of: antifreeze containers, lantern fuel cans, red chemical stained coffee filters, drain cleaner containers and duck tape

Unusual quantities of clear glass containers being brought into the home.