Rescue workers collect body parts after a bomb attack at Fauji Market in Peshawar, December 17, 2012.
Officials in northwest Pakistan say a bomb has killed at least 16 people and wounded more than 40.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
No group has claimed responsibility for the attack.
Khyber is home to various Islamic militant groups, including the Pakistani Taliban, which have waged a bloody insurgency against the government for several years.
Blast Kills 16 in Pakistan
1/5People look at damaged vehicles after a bomb blast in the Pakistani tribal area of Khyber, December 17, 2012.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
2/5A man walks past a burning vehicle after a blast in Khyber, Pakistan, December 17, 2012.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
3/5A woman looks through a window while a man who was wounded in a bomb attack at Fauji Market lies at the Hayatabad hospital in Peshawar, Pakistan, December 17, 2012.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
4/5People stand near coffins of people killed in a bomb blast in the Pakistani tribal area of Khyber, December 17, 2012.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
5/5Beginning the start of a four-nation trip, U.S. President Barack Obama steps down the ramp upon his arrival at Haneda International Airport in Tokyo, April 23, 2014.
Authorities say the marketplace explosion Monday happened near government offices in the town of Jamrud, part of the Khyber tribal district.
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Elsewhere Monday in Pakistan, officials say gunmen killed a provincial government spokesman and two police officers in the troubled southwestern city of Quetta.
Police say the attackers shot dead Khadim Hussain Noori and then shot the police who were pursuing them.
The civil servant was a Shiite Muslim, and officials say the attack in Baluchistan province may have been related to sectarian unrest.
Baluchistan has experienced a spike in sectarian killings the past year as Sunni Muslim extremists have targeted Shiites.
The province is also the scene of a decades-long insurgency by Baluch nationalists who demand greater autonomy and a larger share of the province's natural resources.
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