Lakehurst, New Jersey (CNN) -- The Naval Air Engineering Station Lakehurst in New Jersey was locked down for about an hour Monday morning after two security incidents, one involving a delivery truck driver with a legal firearm, a spokeswoman said.
No arrests were made, and the station has since reopened, said spokeswoman Pattie Odoardo.
The incident with the armed delivery truck driver occurred at the main gate, she said.
"The driver was asked if he had firearms," the spokeswoman said. "The driver stated he had firearms. He was cited by security and asked to leave the base."
The driver was allowed to keep his licensed firearm, Odoardo said. But civilian firearms are not permitted on the base, she said. Odoardo did not know who the driver works for.
The second incident involved the station's commercial gate, she said.
"There were reports of gunshots," Odoardo said. "Security investigation has found nothing to substantiate there were any gunshots."
The lockdown went into effect around 10 a.m. ET and was lifted around 11 a.m., Odoardo said.
The Dix and McGuire sections of the joint base also were locked down initially, Odoardo said. The base is known as the Joint Base McGuire-Dix-Lakehurst.
After 30 minutes, McGuire and Dix were opened, Odoardo said. The Lakehurst gates remained closed for about an hour, she said.
CNN's Allan Chernoff contributed to this report.