LOWELL, N.C. — Police investigated a report of a bomb threat at Holbrook Middle School in Gaston County on Thursday. The threat was made before 4 pm. Lowell Police Department and Gaston County Police Department responded to the school. Shortly after 5pm and after thoroughly searching the school, officials say no evidence of a bomb was found and students were released from school. There is no word on any arrests related to the threat. This is a developing story.