The White House has condemned the attacks in New York and New Jersey as an "act of terrorism".
As the charges against Ahmad Khan Rahami were made public the White House made its statement, previously it had withheld making an assessment on what had happened until a motive could be discerned.
Authorities are investigating whether Ahmad Rahami, who was not on US counter-terrorism lists, acted alone or as part of a terror cell.
Investigators studying CCTV footage may have identified the same man at each location, law enforcement sources reported to have said.
At least 29 people have been injured in an explosion which rocked Manhattan. Here's what we know so far.