New Delhi, Feb 13 (Agencies) : In yet another incident which raises concerns over safety of institutions linked to the minorities, a Christian school located in south Delhi's Vasant Vihar was vandalised by some unknown persons late on Thursday.

According to reports, the window of the Holy Child Auxilium School principal's room was broken and the CCTV cameras installed there were also damaged by some unidentified persons.

The police, which is now probing the matter, has claimed that it may be a case of theft.

Delhi CM-designate and AAP leader Arvind Kjeriwal has strongly condemned the incident and said that such acts won't be tolerated.

Meanwhile, Union HRD Minister Smriti Irani, who studied in this school, is also expected to visit the school shortly.

In view of the incident, all classes were cancelled today and the security has been tightened.

"Certain people came at night, broke the CCTV camera, went into the principal's room and vandalised it," Father Dominic Emmanuel, spokesperson of the Delhi Archdiocese, was quoted as saying.

He further alleged that the incident is in line with a series of attacks on churches in Delhi.

After massive protests by Christian groups, Home Minister Rajnath Singh tightened security around churches and other religious institutions.