At least 12 people have been killed in a powerful explosion in Pakistan's eastern city of Lahore, police say.
At least 15 people have been killed in two explosions in Pakistan's eastern city of Lahore, police say.
A number of people have also been injured in the blast that hit an office of the federal police, reports say.
The majority of the victims died in a blast that hit an office of the federal police, reports say.
There are reports of a second explosion in a different part of the city, but no further details are available.
A second explosion happened in a residential area and killed two children, according to the police.
State-run television showed pictures of a damaged multi-storeyed building and burning cars at the site of the blast near the federal police office.
State-run television showed pictures of a damaged multi-storeyed building and burning cars at the site of the blast near the federal police office.
The police said the explosion hit the Federal Investigation Agency in Lahore.
The police said one explosion hit the Federal Investigation Agency in Lahore.
FIA official Mirza Mohammed Yasin told reporters that it was caused by a bomb planted near a lift inside the building.
"The building is badly damaged. Fire is raging," witness Tariq Saeed told Reuters news agency.
"The building is badly damaged. Fire is raging," witness Tariq Saeed told Reuters news agency.
"Bodies are being taken out of the building. I have seen five," he said.
"Bodies are being taken out of the building. I have seen five," he said.
The BBC's Barbara Plett in Islamabad says some 200 to 300 people are said to work in the building and the number of casualties is expected to rise.
The cause of the second explosion was not immediately known.
Last week, four people were killed and 14 injured in a suicide bombing at a naval college in Lahore.
Last week, four people were killed and 14 injured in a suicide bombing at a naval college in Lahore.
Lahore, the capital of Punjab province, has not been a frequent target, although 19 people were killed in a suicide bomb attack near the High Court in January.
Lahore, the capital of Punjab province, has not been a frequent target, although 19 people were killed in a suicide bomb attack near the High Court in January.
The country has been fighting an Islamist insurgency in its northern provinces and its major cities and military are frequently targeted by bombers.
The country has been fighting an Islamist insurgency in its northern provinces and its major cities and military are frequently targeted by bombers.
Former Prime Minister Benazir Bhutto was killed by a suicide bomber in Rawalpindi in December.
Former Prime Minister Benazir Bhutto was killed by a suicide bomber in Rawalpindi in December.
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