The BNP chairperson, Khaleda Zia, on Monday expressed doubts if a neutral probe into the massacre at the Bangladesh Rifles headquarters would be possible under the present government or the masterminds of the killings would be identified. ‘We have serious doubts whether a neutral investigation under the present government’s supervision is possible at all or whether the masterminds of the massacre would be identified,’ Khaleda said at a briefing at her Gulshan office in the night.