Reports say a rickshaw was used by a suicide bomber in the attack
A suicide bomber has killed at least three people in the north-western Pakistani city of Peshawar, police say.
Five others were wounded in the blast near a police checkpost, the authorities said.
The bombing comes a day after at least 12 people were killed in a suicide bomb attack near the city.
More than 300 people have been killed in a wave of attacks as Pakistani troops launched an assault against the Taliban in South Waziristan last month.
Police said Monday's blast happened on the city's ring-road.
"The bomber was in a rickshaw and detonated his explosives when the rickshaw was stopped for a check," police official Zafar Khan told Reuters news agency.
The attacker killed a policeman, the rickshaw driver and a passer-by, police said.
Television footage later showed ambulances rushing to the scene of the blast to take the injured to hospital.
There was no immediate claim of responsibility for the attack.
Peshawar has seen some of the worst of the recent violence in Pakistan. Last month a massive blast at the city's Peepal Mandi market killed 118 people.
The government blamed the attack on the Pakistani Taliban, but the head of the militant group denied being behind it.
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