The White House was placed on lockdown Saturday after shots were fired near the executive mansion, prompting a response from the U.S. Secret Service.

Nasire Best, 21, fired shots toward a White House security checkpoint Saturday evening and Secret Service officers returned fire, according to the District of Columbia Metropolitan Police Department.

The man approached the checkpoint at 17th Street ⁠and Pennsylvania ⁠Avenue near the White House, pulled a gun out ​of his bag and started shooting at officers, according to a Secret Service statement ...