Bangalore Blast

A police officer inspects the site of an explosion at a residential neighborhood near the office of India's main opposition Bharatiya Janata Party in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of the political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

Police officials and others inspect the site of an explosion at a residential neighborhood near the office of India's main opposition Bharatiya Janata Party, in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of the political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

A partly charred scooter stands at the site of an explosion in a residential neighborhood near the office of India's main opposition Bharatiya Janata Party, in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of the political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

Elderly people walk past charred vehicles as they are taken to a safer place after an explosion in a residential neighborhood near the office of India's main opposition Bharatiya Janata Party in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of a political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

An official walks past charred vehicles after an explosion at a residential neighborhood near the office of India's main opposition Bharatiya Janata Party in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of a political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

A police official examines parts of a charred vehicle after an explosion at a residential neighborhood near the office of India's main opposition Bharatiya Janata Party, in Bangalore, India, Wednesday, April 17, 2013. A powerful bomb exploded Wednesday near the office of the political party in the southern Indian city of Bangalore, injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

A partly torn poster of India's main opposition Bharatiya Janata Party (BJP) hangs on an electric pole next to a car, damaged in an explosion in a residential neighborhood near the BJP office, in Bangalore, India, Wednesday, April 17, 2013. A bomb planted on a motorcycle exploded Wednesday near the office of BJP injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)

Police use a sniffer dog to collect evidence next to charred vehicles at the site of an explosion in a residential neighborhood near the office of India's main opposition Bharatiya Janata Party (BJP), in Bangalore, India, Wednesday, April 17, 2013. A bomb planted on a motorcycle exploded Wednesday near the office of BJP injuring at least 16 people, police said. (AP Photo/Aijaz Rahi)