"Given their histories, the potential for Pompeo and Haspel to endorse abusive practices and lend support for their use abroad should convince the Senate to reject both nominations," the release said on Tuesday.
President Donald Trump announced earlier in the day he was replacing Secretary of State Rex Tillerson with current CIA Director Mike Pompeo. Gina Haspel, a CIA deputy director, was tapped to take Pompeo's job.
The advocacy group said Pompeo has not denounced the US government's use of interrogation techniques and mass surveillance. Therefore, the Human Rights Watch warned Pompeo's views would hurt the international community, if he was confirmed as secretary of state.
According to the New York Times, Haspel oversaw the interrogation of a detainee, Abu Zubaydah, who was waterboarded 83 times in a single month before interrogators concluded he had no useful information.
The Senate is set to hold confirmation hearings for both candidates in April.