New Delhi: Congress president Sonia Gandhi on Monday condemned the terror attack on Afghan parliament, calling it a \"heinous attempt by fundamentalists to subvert democratic forces\".

Expressing deep concern over a string of explosions in the Afghan parliament complex, she said such cowardly attacks by terrorists can never deter the democratic traditions gaining strength the world over.

The Congress and indeed the entire country stood by the people of Afghanistan, she said in a statement.

Afghan Police said that all seven Taliban militants were killed in the attack that also injured over 20 civilians.

Sonia condemns attack on Afghan parliament