NEW YORK — A civil liberties group asked the Organization of American States’ human rights commission Tuesday to investigate the US government for what it says are violations of the rights of convicted terrorism plotter Jose Padilla.

The American Civil Liberties Union says the United States violated Padilla’s rights when it labeled him an ‘‘enemy combatant’’ a decade ago and subjected him to interrogation that amounted to torture, including sleep and sensory deprivation in solitary confinement.