‘Aware of potential of becoming broader’: US after India calls Delhi blast ‘terror attack’; Shah vows ‘msg to world’

US Secretary of State Marco Rubio acknowledged the Delhi car bomb blast near Red Fort as a "heinous terror incident" with potential to escalate. He commended India's "measured" and "professional" investigation into the explosion that claimed 13 lives. Rubio stated the US offered assistance but believes India is capable of handling the probe effectively.