Washington - President Barack Obama is offering condolences to the families of those killed in Sunday's shootings outside a Jewish community centre and a retirement village in Kansas.
Obama says he has asked his White House team to make sure law enforcement authorities have "the necessary resources to support the ongoing investigation".
He is pledging the full support of the federal government during what he called "this trying time".
Two men were killed on Sunday when a man in his 70s fired shots behind the Jewish Community Centre of Greater Kansas City.
The gunman then fled and opened fire at nearby Village Shalom, killing a woman, before being arrested near a school.
Obama says reports of the shootings were "heartbreaking".