Church leaders in India have expressed sorrow and condolences following the deaths of at least eight people after an explosion near Delhi’s Red Fort on Monday.

The blast occurred around 6:52 p.m. local time after a slow-moving vehicle stopped at a red light in a heavily congested area of the city. About 20 people were injured, and eight were confirmed dead following the explosion.

Indian authorities are investigating the incident under strict anti-terrorism laws and said all possible angles are being examined. No suspects have been named or arrested so far.

Church leaders have echoed calls for justice in the wake of the tragedy. Fr. Savarimuthu Sankar, spokesperson for the Archdiocese of Delhi, offered condolences on behalf of the Catholic Church, expressing hope that “innocent lives are not lost in mindless violence.”

Catholic lay leader A.C. Michael, convener of the ecumenical United Christian Forum, said he believed “it is the responsibility of the incumbent government to maintain harmony in the country.”

Hours before the Delhi blast, police in the federal territory of Jammu and Kashmir said they had arrested seven men — including two doctors — in a separate anti-terror investigation spanning Kashmir and the neighboring states of Haryana and Uttar Pradesh.

Authorities said the raids uncovered two pistols, two assault rifles, and 2,900 kilograms of bomb-making material.

“The investigation has revealed a white-collar terror ecosystem involving radicalized professionals and students in contact with foreign handlers operating from Pakistan and other countries,” police said, adding that the men were linked to the Pakistan-based militant groups Jaish-e-Mohammad and Ansar Ghazwat-ul-Hind.

Pakistan’s foreign office did not immediately respond to a request for comment.

India awaits further information on the cause and nature of the explosion, which some are treating as a possible terrorist attack. If confirmed, it would mark the first major act of terror in New Delhi since 2011.