The Grayson County Sheriff's Office found a suspicious device while executing a search warrant at a Sherman residence Thursday morning.

(Editor's note: This story has been updated throughout.)

The Plano bomb squad safely detonated an explosive device and two people were arrested after the Grayson County Sheriff’s Office and Sherman Police executed a search warrant at a residence Thursday morning.

Authorities searched a Sherman residence for narcotics in the 700 block of Patricia Drive at about 6 a.m. Grayson County Sheriff’s Lt. Sarah Bigham said officers did find narcotics at the site during the search, but they also located a small explosive device. The sheriff’s office then contacted the Bureau of Alcohol, Tobacco, Firearms and Explosives, who in turn called in the Plano Police Department Bomb Squad.

Sherman Police closed a section of Patricia Drive at East Wells Avenue, and a white Plano bomb squad truck parked near the site. A bomb squad officer suited up in a protected suit and entered the property. At about 10:35 a.m., an officer ducked behind a police vehicle, shouted “fire in the hole” three time and a slight boom sound followed as the device was safely detonated. Sherman Fire-Rescue personnel were also at the scene during the detonation.

“They set it off safely somehow,” Bigham said. “There are lots of different ways they have of doing that depending on the size and makeup of whatever it is.”

Bigham said the size of the explosive indicated it did not pose a serious threat, but it was large enough to require authorities to contact the ATF for disposal. Bigham said she’s not sure what the device actually was, but it was something constructed.

“It’s something that somebody built,” Bigham said.

At about 11 a.m., the bomb squad personnel left the scene, and police started clearing out. Bigham said two people were arrested on narcotics charges as a result of the search. She did not release their names Thursday afternoon.

Bigham said no homes were evacuated during the incident and there were no apparent dangers posed to the public. She also noted that no threats were made with the device.

Sherman Police Sgt. D.M. Hampton said some rumors circulated of a bomb threat at the Sherman Independent School District, but those rumors were not true. No such threat was made to any school, he said. Officials with Crutchfield Elementary School posted on social media that they were monitoring the police situation, but the school was operating normally. Crutchfield is located in the same neighborhood as the searched property. Sherman ISD officials said the elementary school did not go on lockdown.

Bigham said more information on the search and the incident should become available Friday.

The Plano bomb squad was called on an unrelated incident in Denison last week after a suspicious device was reported in the 500 block of East Hanna Street. The device was destroyed with a water cannon, but police said they found the device did not contain any explosives. A 15-year-old male was taken into custody in that incident that night.