The couple who carried out the deadly California massacre that claimed 14 lives may have been radicalised to commit an act of terror, President Barack Obama said on Saturday, asserting that Americans will not be terrorised.
Obama also renewed his call to for tightening gun control measures.
The Federal Bureau of Investigation has identified Syed Rizwan Farook, 28, a Pakistani-American, and his wife Tashfeen Malik, 27, a Pakistani national -- as having carried out the deadly massacre in San Bernardino.
The couple were killed by police in an exchange of fire on Wednesday after they were chased down following their assault in which 14 people were killed.
"It is entirely possible that these two attackers were radicalised to commit this act of terror. And if so, it would underscore a threat we've been focused on for years -- the danger of people succumbing to violent extremist ideologies," Obama said in his weekly web and radio address to the nation.
This is for the first time that the US President has conceded that the deadliest shooting in recent years may have been a result of radicalisation, a fear long dreaded by US law enforcement agencies after the 2008 Mumbai terror attack in which a radicalised American national played a key role.
The FBI said it was investigating this as an act of terror.
"We know that Islamic State and other terrorist groups are actively encouraging people around the world and in our country to commit terrible acts of violence, often times as lone wolf actors," said the US President.
"And even as we work to prevent attacks, all of us -- government, law enforcement, communities, faith leaders -- need to work together to prevent people from falling victim to these hateful ideologies," he said.
Referring to the ongoing investigations by the FBI, Obama, who did not name the couple, said they are learning more about the killers.
"And we're working to get a full picture of their motives -- why they committed these revolting acts. It's important to let the investigators do their job. We need to know all the facts. And at my direction, federal law enforcement is helping in every way that they can. We're going to get to the bottom of this," he said.
This tragedy reminds of the obligation to do everything in power, together, to keep communities safe, Obama said.
"This is work that should unite us all as Americans, so that we're doing everything in our power to defend our country. That's how we can honour the lives we lost in San Bernardino," he said.
"That's how we can send a message to all those who would try to hurt us. We are Americans. We will uphold our values -- a free and open society. We are strong. And we are resilient. And we will not be terrorised," Obama said.
Image: US President Barack Obama speaks about the shootings in San Bernardino, California during a meeting with his national security team in the Oval Office of the White House in Washington. Photograph: Kevin Lamarque/Reuters
