Trump said that Dzhokhar Tsarnaev, a 2013 Boston marathon bomber, deserved to be executed, after the appeals court overturned his verdict.

"Nobody deserves the death penalty more than the Boston marathon bomber Dzhokhar Tsarnaev. Too many lives have been lost and lives have been destroyed," US President Donald Trump tweeted on Aug. 2.

Tsarnaev, 27, placed two homemade bombs near the finish line of the 2013 marathon, killing three people and injuring 264.

The bombing was one of the most shocking attacks in the United States, after the September 11, 2001 terrorist attack.

Tsarnaev then appealed on the grounds that the trial should not be held in Boston, with errors in the jury selection process and the judge did not fully consider the evidence.

The federal appeals court in Massachusetts upheld most of Tsarnaev's sentences sentenced by the first-instance court, but directed a district court to reorganize a new trial to determine Tsarnaev's fate involving 17

Regardless of the new trial outcome, Tsarnaev was "imprisoned for life", the three appellate court judges said.

Tsarnaev's lawyers insisted that his brother was more reproachful and that Dzhokhar had no history of violence.

Trump regularly calls for increased death penalty application, and during his re-election campaign, his administration appears determined to make a record number of federal executions.

Federal executions are rare in the United States, though three prisoners were executed this month after Trump ordered a resumption of federal death penalty after a 17-year hiatus.