Ghaziabad, Sep 6 - While taking stock of previous day's violence in this Uttar Pradesh city in which about two dozen people including three policemen were injured, senior government officials Sunday said that they would examine how illegal colonies on such a large scale came up here.

The divisional commissioner of Meerut, while addressing a meeting of senior officials here at Ghaziabad, said circumstances under which illegal constructions had come up are being examined by the government.

The inspector general of police, who also attended the meeting, said police had to be more alert and criminal intelligence had to be sensitized to stop the crime before its occurrence.

'The government is examining how such huge colonization came up on public land. Apparently only land grabbers cannot be held solely responsible for illegal colonization. Officials of the departments on whose land the colonization came up seem to be involved,' Meerut Divisional Commissioner Shrawan Kumar Sharma said.

About two dozen people, including three policemen, were injured and many vehicles set ablaze and damaged here Saturday when people protesting the government's move to evict them from an unauthorised colony turned violent.