Bukit Aman is investigating Barisan Nasional secretary-general Datuk Seri Nazri Aziz in connection with his speech during his campaign rounds for the Semenyih by-election, says Tan Sri Mohamad Fuzi Harun.

The Inspector-General of Police also said the 37-year-old man who was arrested for placing idols at a surau in Klang has been remanded until Thursday.