Washington, July 15 -- The White House was briefly placed under lockdown on Tuesday after a "phone" was thrown over the security fence

The incident occurred at approximately midday when Secret Service agents responded to reports of an object being hurled over the North Lawn fence.

Press Secretary Karoline Leavitt confirmed to reporters that "somebody threw their phone over the fence", prompting immediate security measures.

Members of the press corps, who were waiting to speak with Education Secretary Linda McMahon during her Fox News appearance, were quickly escorted into the James S. Brady Briefing Room as agents secured the area.

The Secret Service implemented a full lockdown of the White House grounds and temporarily closed Pennsyl...