2:30 p.m. update: Laurel police said an investigation showed that the female student reported a false threat. Police said the student was arrested and charged, but a police spokeswoman could not say what the charges were.

Original post:

Laurel High School was placed on lockdown Thursday morning as police investigated a possible gun threat, officials said.

Prince George’s County police said that a female student reported that another girl “threatened” her. No one was injured.

Police responded to the school about 8:15 a.m. to investigate. They did not find a gun or evidence of a physical threat.

The school was reopened about 9 a.m.