Islamabad, Pakistan (CNN) -- The Taliban is responsible for Monday's suicide blast which targeted a police station in northwest Pakistan, a spokesman for the group told CNN.
Ihsan Ullah Ihsan, a spokesman for the Pakistani Taliban said Tuesday it was responsible for the blast and that U.S. forces as well as Pakistani law enforcement agencies were enemies of the Taliban.
At least 17 people were killed and 40 wounded in the attack Monday, which was the latest in a series of suicide attacks in the country in less than a week.
The explosion took place in Lakki Marwat district in the North West Frontier Province. Police say nine of the deceased were policemen, and eight were civilians.
Jameel Khan, a senior police official in the district, told CNN a suicide bomber in an explosive-laden vehicle hit a police building.
On Friday, at least 73 people were killed and 206 people wounded in a suicide attack in southwestern Pakistan
Journalist Nasir Habib contributed to this report.