RJD chief Lalu Prasad on Tuesday demanded a high-level impartial probe into the killing of eight undertrial SIMI activists in an alleged "encounter" with police in Bhopal."There should be a high-level impartial probe into the killing of the eight activists of SIMI (Students Islamic Movement of India)" on Monday, Lalu Prasad told the media here.Lalu Prasad said only a high-level probe would clear the suspense over whether it was a real or fake "encounter" that followed the escape of the men from the Bhopal Central Jail."Going by several reports, it appears that killings by the police raised several unanswered questions," he said.Lalu Prasad also attacked the BJP and Prime Minister Narendra Modi for failing to control the situation along the border with Pakistan."Every day either a soldier or civilians have been killed but the Modi government has failed to control it," he said.