April 24 (Reuters) - U.S. President Donald Trump’s administration plans to add firing squads, electrocution and gas asphyxiation as alternative methods of executing people convicted of the gravest federal crimes, it ​announced on Friday, noting difficulties in obtaining drugs for lethal injections.

The recommendation came in a Justice Department report fulfilling Trump’s promise to resume capital punishment at the federal level in ‌his second term, although it will likely be several years before another federal execution can be scheduled.

Shortly before his first term ended in 2021, Trump, a Republican, resumed executions at the federal level after a 20-year gap, putting 13 federal prisoners to death with lethal injections in his final few months in office. There had been just three federal executions in the preceding 50 years.