New Delhi, July 18 -- Three colleges of Delhi University received bomb threats through email, police said on Friday.

According to police, IP College for Women, Hindu College, and Shri Ram College of Commerce (SRCC) got bomb threats via email today. Standard drill is being followed. Campuses are being searched.

This comes days after St. Stephen's College received a bomb threat. The email claimed that a bomb had been planted in the library, officials said.

Moreover, St. Xavier's School in the national capital has also received a bomb threat.

Over 20 schools in Delhi have received bomb threats via email, officials said today.

Personnel of the Delhi Fire Department and Delhi Police were deployed at several schools.

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