Madhya Pradesh government has imposed Sunday lockdown in Khargone, Betul, Chhindwara and Ratlam after a surge in coronavirus cases, Medical Education Minister Vishvas Kailash Sarang said on Wednesday. Earlier this month, the government had imposed Sunday lockdown in Bhopal, Indore and Jabalpur. Schools and colleges will remain closed in these seven cities till March 31, Sarang added.