Continued from page 1

Mr. Obama was informed of the shooting around 10:30 a.m. by his homeland security adviser, John Brennan, White House officials said. He spoke during the day with Connecticut Gov. Dannel Malloy.

The White House also announced that in response to the shootings, Mr. Obama was canceling a planned trip to Portland, Maine, on Wednesday, in which the president was to have drummed up support for his plan to raise taxes on wealthier families.