Washington: President Donald Trump noted that the pipe-bomb suspect, Cesar Sayoc, 56, was a Trump supporter, but added he bears "no blame" for the man's actions.
Asked if he would contact former president Barack Obama, others targeted by the package bombs, Trump says he won't.
Cesar Sayoc is a fervent supporter of Trump with an extensive record of past arrests, including a stint served on probation for making a bomb threat.
The Florida man was arrested and charged on Friday in connection with mailing at least 14 suspected explosive devices that targeted high-profile Democrats including Barack Obama and Hillary Clinton and cable network CNN, officials said on Friday.
FBI agents used DNA and a fingerprint to identify the suspect.
Sayoc has been charged with five federal crimes including threats against former presidents and faces up to 58 years in prison if found guilty, US Attorney-General Jeff Sessions said.
FBI agents arrested Sayoc, 56, in Plantation, Florida and also hauled away a white van plastered with pro-Trump stickers, the slogan “CNN SUCKS” and images of Democratic figures with red crosshairs over their faces.
FBI Director Christopher Wray said there could be other packages.
Announcing the arrest to a cheering audience at the White House, Trump said such “terrorising acts” were despicable and had no place in the US.
“We must never allow political violence to take root in America — cannot let it happen,” Trump said.