"He arrived in Jammu yesterday and carried out the attack this morning, and was fleeing back to Kashmir when he was arrested by police at a checkpoint", Jammu police chief M.K. Sinha told reporters. "We are chasing all leads".
The teen school boy who triggered the bomb blast on Thursday by tossing a grenade at a bus had concealed the explosive in his tiffin box while travelling to Jammu from Kashmir.
The teen came to Jammu in a private auto, the police sources said, adding they are trying to track the driver.
With one more person succumbing to his injuries on Friday, the death toll in Thursday's grenade attack at the Jammu bus stand has risen to two. Reportedly, Indian police force and troops have sealed the pace and started the investigations.
The police blamed the attack on Hizb-ul-Mujahideen outfit and said that its cadre who carried it out has been arrested.
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The injured are being shifted to the Jammu's Government Medical College.
A parked bus of the state road transport corporation (SRTC) suffered extensive damage in the blast which caused panic among the people. The bus stand is in the heart of Jammu city.
"Obviously the intention is always to disturb the communal harmony and peace". Help Jammu police in keeping your city safe. In May 2018, three policemen and a civilian were wounded in a similar grenade attack on the bus stand.
The student was self-trained to throw grenades by using content available on YouTube, sources said.
Past midnight on December 28, suspected terrorists had hurled a hand grenade near the bus stand police station. Following the scrutiny of CCTV footages, the Jammu Police cracked the case within a few hours of the grenade attack. No one was injured in this attack.