Islamabad , Pakistan ( CNN ) -- The Pakistani Taliban has claimed responsibility for an early Wednesday morning attack on a police station that killed two officers and injured seven others , a spokesman for the militant group told CNN . Approximately 10 militants charged the police station , tossed grenades and then opened fire in the predawn attack , said senior police official Sohail Khalid . The militants escaped after an hour-long firefight with police , Khalid said . The attack took place in Dera Ismail Khan , a district that sits next to Pakistan 's militant-plagued tribal region along the Afghan border . It comes one day after Pakistani Taliban spokesman Ehsanullah Ehsan denied reports that the militant group had declared a cease-fire while holding peace talks with the government . Wednesday morning 's attack was proof that reports of the cease-fire were false , Ehsan told CNN by phone .
About 10 militants storm the police station . The attack comes a day after Pakistani Taliban denied existence of a ceasefire .