President Barack Obama called Massachusetts Governor Deval Patrick and Boston Mayor Thomas Menino on Friday to offer ongoing federal help in the Boston bombing investigation, and to express condolences for a police officer killed in the search for suspects.
"The President said that the entire country is behind the people of Boston as well as Massachusetts, and that the full force of the federal government will continue to be made available until those responsible are brought to justice," a White House official said.
Obama stayed out of the public eye on Friday after traveling to Boston on Thursday to speak at a service for the victims of Monday's bombing.
Top White House officials continue to watch the situation and brief Obama, the White House said.
Reporting by Roberta Rampton; Editing by Eric Walsh