Panic gripped schools in the national capital and adjoining Noida after six of them received bomb threats here on Wednesday morning, police officials said. Mother Mary School at Mayur Vihar, Delhi Public School at Dwarka, Sanskriti School in Chanakyapuri, Delhi Public School at Vasant Kunj, Amity School in Saket and Delhi Public School (DPS) in Noida Sector 30 have received bomb threats via email, they said.