The lockdown at Brookswood Secondary School in Langley has been lifted, but police are still investigating secondhand reports that a man with a gun was seen in the area.

Langley RCMP arrived at the scene shortly after 2 p.m. after receiving reports that a man described as suspicious had been seen in the east field. Students were kept in their classrooms for about two hours while officers searched the area. They were sent home at about 4 p.m.

"There is no indication that the individual was inside the school," RCMP spokesperson Cpl. Holly Largy told CBC News.

The reports of someone possibly holding a firearm came through the school's administrators, who heard the news secondhand, Largy said. Police locked down the building as a precautionary measure.

"We do believe that there was an individual in the field near the school, potentially with something that looked like a firearm — potentially an airsoft [replica weapon] or a BB gun," Largy said. "We'll just have to continue to identify the individual and hopefully recover that firearm."