HENDERSON, N.C. — Investigators do not know what sparked a fire at the IAMS pet food plant in Henderson Wednesday night.
The fire broke out around 11 p.m and continued burning until 3:50 a.m Thursday.
All fire units left the scene by 4:15 a.m, according to the Vance County Sheriff's Office.
About 50 employees were evacuated while crews worked to out the fire out.
No one was injured.