Shiv Sena's Arvind Sawant today played down the choice of a new Chief Whip in Lok Sabha -- viewed largely as a precautionary measure to prevent a replay of the split that took place in the assembly. He said the earlier whip Bhawna Gawli, had concerns about being on the radar of the Enforcement Directorate. Boris Johnson resigned on Thursday as leader of Britain's Conservative party, paving the way for the selection of a new Prime Minister after dozens of ministers quit his scandal-hit government. Reacting sharply to the German foreign ministry's comments on fact-checker Mohammed Zubair's arrest, the government today called it "an internal issue" and said it was needless to comment on a case that is before the court.