President Barack Obama has been told about the fatal shooting spree at a Sikh temple in Wisconsin, a White House official has confirmed.
John Brennan, Obama's counterterrorism adviser, told him about the shooting.
The president is now receiving updates on the incident in suburban Milwaukee, the official said.
At least seven people have died, including a gunman, and at least three people are seriously wounded, local police and hospital officials said.
More top news
MI5 face mounting pressure over claims the IS executioner 'Jihadi John', named yesterday as a London graduate, was known to them
Labour leader Ed Miliband is due to set out his party's plans on how it would cut tuition fees.
New drug driving laws are to come into effect next week, including laws on some prescribed medications.