Ontario, Nov. 13 -- US Secretary of State Marco Rubio on Wednesday (local time) called the blast which took place in Delhi on Monday evening to 'clearly' be a 'terrorist attack'. He praised the country's professionalism in handling the investigation.

Rubio made the remarks while responding to a media query on India declaring the blast in Delhi on Monday as a "terror incident".

"The Indians need to be commended. They've been very measured, cautious and very professional on how they're carrying out this investigation. That investigation continues. It clearly was a terrorist attack. It was a car loaded with highly explosive materials that detonated and killed a lot of people."

He added, "I think they are doing a very good job of carrying ...