Sudanese student Amjad Elgajoli, 21, was the fourth foreign national to die from the Feb. 13 terrorist attack. He was an undergraduate student at the Nowrosjee Wadia College in Pune. An Italian woman, an Iranian student and a Nepali worker were also killed in the explosion which the authorities said was caused by a bomb concealed in a bag.

Atul Anaap, 30, a business executive working for the Reliance group of companies, also succumbed to injuries on Saturday, Pune Police Commissioner Satya Pal Singh told a press conference.

The blast ripped through a popular German bakery, injuring 60 people. More than 30 victims are still being treated in hospitals in Pune, about 165 km southwest of India's business capital Mumbai.

Ahmed succumbed to injuries at Inlaks Budhrani hospital midnight Friday while Anaap succumbed at KEM Hospital on Saturday morning.

The announcement of the latest deaths came as students in New Delhi held prayers and lit candles on Saturday to pay tribute to victims of the blast.

Four men have been detained by Indian police for questioning in connection with the explosion, which came a day after India and Pakistan said they would resume peace talks in New Delhi.

A hitherto unknown outfit, which said it had splintered from a larger Pakistan-based outfit, claimed responsibility for the attack in a telephone call earlier in the week to the Indian newspaper The Hindu.

The Hindu said it was contacted by someone claiming to be a spokesman for a group called Lashkar-e-Taiba Al-Almi which said it had carried out the bombing at the German Bakery, located near the Osho Ashram, a yoga and meditation retreat which draws visitors from around the world.

The caller said the attack was in response to India's "refusal" to discuss the disputed region of Kashmir, claimed by Pakistan and India, in the peace talks that are due to resume between the two countries this Thursday.

The caller said Lashkar-e-Taiba Al-Almi had split from the larger Lashkar-e-Taiba because the latter "took its orders from Pakistan's intelligence agency,” The Hindu reported.

The banned Lashkar-e-Taiba is blamed by India for the attacks on Mumbai that led to a suspension of dialogue between India and Pakistan.

Meanwhile, police beefed up security at Koregaon Park and other key places in Pune on Saturday, but refused to divulge the reason for the heavy deployment of security forces.

The city police have also ordered all theaters and multiplexes to screen fa ilm on security prior to screening movies. Police stations have also been instructed to depute a constable for every 10 buildings to verify tenant information and cross-check information given by landlords.

In a press note, the traffic police have urged two-wheeler riders not to cover their faces in the city. Manoj Patil, deputy commissioner of police (traffic), said women riding two wheelers, especially in the Koregaon Park and Pune Cantonment areas, should cooperate with the police by not covering their faces.

-- With input from agencies