Man with gun near White House shot by Secret Service while Obama is away

A man wielding a gun approached the White House on Friday and ignored several orders to drop his weapon,

then was shot by a Secret Service agent, touching off a security scramble as the presidential mansion was placed on lockdown for about an hour.

 The man, identified by a law enforcement official as Jesse Olivieri of Ashland, Pa., was critically wounded and rushed to a nearby hospital, the Secret Service said in a statement.

Investigators were looking into whether Olivieri was trying to lure officers into shooting him in a case of so-called suicide-by-cop, an official said.

President Obama was away golfing at Joint Base Andrews outside Washington. Vice President Joe Biden was in the White House but was safe, according to a White House official.