KOLKATA: The Centre on Thursday sought a report from the West Bengal government on alleged "serious security lapses" during the visit of BJP president J P Nadda to the state, officials said.

The Union Home Ministry's communication to the West Bengal government came after BJP state unit chief Dilip Ghosh wrote to Union Home Minister Amit Shah on Wednesday.

In his letter, Ghosh alleged that a "mob" of over 200 people with sticks and bamboos were demonstrating raising black flags in front of BJP's state unit office in Kolkata.