Updated: 2:03 p.m. ET
(CBS News) In the aftermath of Friday's mass shooting in Aurora, Colorado, which left 12 people dead and 58 more injured, First Lady Michelle Obama said Monday she was "heartbroken" about the tragedy.
Obama, in a conference call about her upcoming trip to the London Olympics, said she would be "remiss" not to mention the incident and "how heartbroken that Barack and I are about the tragic shootings that took place" on Friday.
"We've seen people across this country to come together as one American family to mourn the victims of this devastating event," the first lady said. "I know that we'll continue that support in the difficult time ahead."
On Sunday, President Obama traveled to Aurora, Colorado, where he visited with victims and their families at the University of Colorado hospital. His presidential campaign, as well as that of Mitt Romney, said they would be temporarily suspending negative ads in the state as a result of the shooting.
(At VFW on Monday, Obama salutes veterans killed in shooting.)
"Even as we enter the Olympics - this wonderful occasion - I know that we are all holding the people of Aurora in our hearts and in our prayers," the first lady said Monday.
Obama will be leading the U.S. delegation to the opening ceremony of the upcoming Olympic games, and said that her participation in the event was "truly a dream come true."
The first lady also announced a July 28 "Let's Move" event in conjunction with the Olympics games.
"I am very excited about this trip for so many reasons, but I am excited that it will serve as a powerful opportunity to serve as a message to kids in this country and other countries about the importance of staying fit," she said.