An Indian policeman carries a wounded blast victim at the RML Hospital in New Delhi following a bomb blast at the Delhi High Court. (Manan Vatsyayana/AFP/Getty Images)

The act of suspected terrorism occurred at 10:14 a.m., and officials said they believed the bomb went off from inside a briefcase.

“We will never succumb to pressure from terrorists. All political parties must unite to crush the scourge of terror,” Prime Minister Manmohan Singh said in an address to reporters Wednesday.

Local news channels reported that Islamist militant outfit Harkat-ul-Jihad al-Islami had claimed responsibility for the attacks. But Home Minister P. Chidambaram told Parliament investigative teams that the government cannot be certain which group is responsible for the blast until a probe is conducted.

A High Court lawyer at the scene, Mayank Mishra, described what he saw from his window to the Wall Street Journal: “It was a pile of bodies and broken bones,” he said.

The bombing was reported to be the worst attack in India’s capital since the 2008 blasts at shopping centers. That blast left 22 people dead.

Today’s bombing also comes on the heels of three blasts in Mumbai and a low-intensity explosion outside the same courthouse in New Delhi, all just several months ago, sparking fears the government wasn’t doing enough to fight terror. The executive editor of Mid Day, an Indian tabloid, tweeted sarcastically Wednesday:

Watch AP video from New Delhi after the attacks:

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Indian security personnel inspect the area of a ripped off roof of the reception area of Delhi High court, the site of a bomb blast. (Prakash Singh/AFP/Getty Images)

A man injured in an explosion is carried on a stretcher at the RML hospital in New Delhi. (Gurinder Osan/AP)

Relatives of blast victims wait at the RML hospital in New Delhi. (Gurinder Osan/AP)