One person was killed and 14 others were injured in a bomb blast carried out by suspected ULFA militants in Kumarpara in Guwahati on Sunday minutes before Prime Minister Manmohan Singh arrived in the city to lay the foundation for a bridge over the Brahmaputra river.
The blast occurred near a mosque in Kumarpara, Additional Superintendent of Police Rajen Singh said.
The bomb was hidden in a motorcycle in the busy area and exploded at about 5.45 pm.
One person died on way to the hospital while 14 others were seriously injured.
The site of the blast was not on the route scheduled to be taken by the prime minister on his way to the Rajiv Gandhi Indoor Stadium in Amingaon to lay the foundation stone for the city's second bridge over the Brahmaputra. It was also not on his route to the Raj Bhawan where would halt overnight.
The entire area was sealed off and combing operations launched by secuity forces. Security across the city was further intensified, officials said.