"All members of my group join me in mourning the demise of the 23-year-old woman who was gang-raped in Delhi," party head H S Dhami said.
He demanded that the accused be handed "exemplary" punishment so that "no one could dare to think of doing such a ghastly and barbaric act against women in the future."
The group was also "deeply moved" by the suicide of a gang-rape victim due to alleged delay in action against the accused.
"We are deeply moved by another shameful incident of rape of Patiala girl, who committed suicide because of inaction of the local police against the rapists and express our grief and condolences to her family members," he said.