Lincoln County authorities are investigating the explosion of several pipe bombs outside a home early Monday in the eastern part of the county.
Investigators said one unexploded device also was discovered at the scene, in the Iron Station community.
No injuries were reported.
The Sheriff’s Office said it was called about 12:45 a.m. to the 5900 block of Dalmatian Drive, off N.C. 73, after the report of an explosion and small fire in the front yard of a residence.
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Deputies said three bombs apparently had exploded. A fourth bomb was found near the road, deputies said.
Detectives and the Gastonia police bomb squad were called in to detonate the remaining device. Investigators said the bombs were footlong sections of PVC pipe attached to small containers of propane gas.
Agents with the federal government’s Department of Alcohol, Tobacco and Firearms arrived at the scene about 4 a.m., investigators said. They remained at the scene for several hours, and authorities kept Dalmatian Drive closed.
The explosion took place about 6 miles east of Lincolnton. Authorities said only a small fire was set in the yard.
Officials sent an automated phone alert to residents in the area, advising them about the situation. Detectives went door to door on Dalmatian Drive on Monday morning, looking for possible witnesses.