Islamabad: Defence Minister Khawaja Asif demanded stern action against the real planners and masterminds of May 9 vandalism on military installations in the country.Taking to X, formerly Twitter, the veteran politician lamented the delay in sentencing those involved in May 9 mayhem.'As many as 25 people have been sentenced for May 9 riots. The delay in justice further strengthened their facilitators,' said the defence minister.According to Khawaja Asif, those people were made heroes who tarnished the sanctity of our martyrs and ghazis.The PML-N leaders also demanded stern action for the real planners and masterminds of May 9 mayhem in order to avoid such episodes in the future.The ISPR said on Saturday the nation witnessed politically-motivated incidents of vandalism and violence, and described the May 9 incidents as one of the darkest chapters in country's history.According to the ISPR, the May 9 incidents were a huge shock for the nation. It said the sentences had been announced after collectin g irrefutable evidences against the convicts.