President Barack Obama, who was informed about yesterday's incident, was told by his top national security officials that the incident was not an act of terrorism, White House Press Secretary Jay Carney said.
"The President was told there was an active shooter in Brookfield, Wisconsin. He was informed that the shooting did not appear to be terrorism-related," Carney said in a statement.
Obama was briefed by FBI Director Bob Mueller, his Chief of Staff Jack Lew and Advisor for Homeland Security John Brennan. The FBI is at the site and is supporting the Brookfield, Wisconsin police department while they respond to the ongoing situation, he said.
The President has instructed the FBI to ensure that the state and local officials have full support of the Federal government, Carney added.
According to local police and federal investigating agencies, the suspect was identified as Radcliffe F Haughton, the 45-year-old husband of a spa worker. Haughton, an African-American, was later found dead.
Brookfield police Chief Daniel Tushaus said they believe the suspect had placed an improvised explosive device inside the building where the shooting took place, which he said was hampering their efforts to clear the building.
This is the second such incident in the state within three months after a US Army veteran went on the rampage at a Gurdwara killing six worshippers on Aug 5.