NEW DELHI Indian officials on Monday condemned the storming of a police academy near Lahore that left at least 20 dead, saying the attack threatened security across the region.

`We are deeply concerned. We condemn these terror attacks, we condemn all terror attacks and we offer our sympathies to the government and the people of Pakistan,` Home Minister Palaniappan Chidambaram told reporters in New Delhi.

The Indian armys second-in-command Lieutenant General Noble Thamburaj told the NDTV news channel that the military was `watching the situation very carefully.`

`Indian armed forces are prepared at all times should there be a spill-over` into neighbouring India, he said.