DENISON, TX -- Grayson County Sheriff's Investigators discover a meth lab in Denison just after 9:00 p.m. Thursday.
Sergeant Rickey Wheeler says the meth lab was discovered at 614 East Woodard Street, a location they had been watching for a few weeks.
Two men and two women were arrested, deputies say, for manufacturing meth with intent to deliver.
Sergeant Wheeler says investigators and the suspects were moved away from the house because of the chemical danger, but the house was opened up to air out until officers could go back in and process the scene.
Sgt. Wheeler says they expect to remain on the scene for several hours.