National news outlets in America report that the man was in a large crowd when he fired the gun.
NBC's White House correspondent Geoff Bennett tweeted first about the incident.
The Service also said the injured male was being treated by medical personnel. "Our natural death squad is on the scene". Law enforcement authorities have identified the victim but are withholding the man's name pending notification of his family, the spokesperson said.
The shooting sparked panic inside the building, with staff and journalists told to take shelter.
The White House was placed on lockdown, and the surrounding area was cordoned off. "I refer you to the Secret Service for any more information".
The incident increased security at the White House, and reporters were temporarily sent down to the basement. A report of "shots fired" near North Lawn, per a U.S. Secret Service agent. "The president has been briefed", a White House spokeswoman said in a statement.
U.S. to open new embassy in Jerusalem in May - State Department
On the same day, Israeli Prime Minister Benjamin Netanyahu hailed the US announcement as "a great day for the people of Israel". Trump said many previous presidents had made the move an election promise but failed to fulfill it. " But I get it ", he said.
DPRK has Supplied Chemical Weapons to Syria
United Nations experts say North Korea also sent missile technicians and transferred banned ballistic missiles systems to Myanmar. It says North Korean missile experts were seen working at Syrian chemical weapons and missile factories.
Oil prices give up gains; set for weekly drop
U.S. crude output slipped in the last month of 2017, but in November hit an all-time high of 10.057 million barrels per day (bpd). Energy Information Administration reported that domestic crude supplies rose by 3 million barrels for the week ended February 23.