KARACHI, Pakistan — Militants launched an hourslong assault on the police headquarters in Pakistan’s largest metropolis on Friday, officers mentioned, the newest in a string of assaults in latest months which have shaken many Pakistanis’ sense of safety and spurred considerations about militant teams regaining power from secure havens in neighboring Afghanistan.

The assault in Karachi on Friday started round 7:10 p.m., when three militants stormed the five-story constructing in a closely guarded neighborhood residence to many senior officers with Pakistan’s safety forces, in response to Pakistani officers. For round 4 hours, the sounds of gunfire and explosions could possibly be heard within the coronary heart of the southern port metropolis because the police and safety forces battled the militants inside.

Seven folks — together with the three attackers — have been killed within the assault and 14 others have been wounded, in response to Murtaza Wahab, the spokesman for Sindh Province.

“All three attackers have been killed through the operation,” mentioned Muqadas Haider, a senior police officer. “One among them blew himself up on the constructing’s fourth flooring, whereas the opposite two have been shot lifeless on the roof.”

The Pakistani Taliban, generally known as Tehreek-e-Taliban Pakistan, or T.T.P., claimed accountability for the assault.

The assault in Karachi comes three weeks after a mosque bombing in Peshawar killed at the very least 101 folks and wounded 217 others, principally cops and authorities staff. That blast, for which a faction of the T.T.P. claimed accountability, was the deadliest to hit Pakistan in years.

The high-profile assaults from the group have added to mounting proof that the Pakistani Taliban is regaining power in Afghanistan below that nation’s new Taliban administration, analysts say.

For a lot of in Karachi, the hourslong assault felt like a violent throwback to a decade in the past, when the Pakistani Taliban established a stronghold within the metropolis, bringing a guerrilla battle as soon as confined to the nation’s tribal areas into the financial hub.

Shaped in 2007 amongst a unfastened community of militants, the Pakistani Taliban rapidly emerged as one of many nation’s deadliest militant organizations.

For years, violence from the group was principally contained to the nation’s tribal belt alongside the Afghanistan border. However after a concerted Pakistani army operation in opposition to the group’s base within the tribal areas in 2009, some militants started migrating to the port metropolis of Karachi.

Inside a number of years, the group had constructed a powerful presence in Karachi, reshaping the town’s established community of competing prison, ethnic and political armed teams. Throughout Karachi, Pakistani Taliban militants ran extortion rackets, killed political rivals and carried out bloody assaults on safety forces.

In one of many group’s largest assaults, in June 2014, 10 militants with the T.T.P. infiltrated Pakistan’s largest worldwide airport in Karachi, setting off an hourslong battle with safety forces, as passengers waited in a close-by terminal and in planes grounded on the tarmac. The assault prompted a Pakistani army offensive that flushed most T.T.P. fighters into Afghanistan.

After the Afghan Taliban seized energy in Afghanistan in August 2021, Pakistani authorities anticipated that the brand new authorities would assist rein within the T.T.P. in return for the covert assist Pakistan had given the Afghan Taliban through the U.S.-led battle in Afghanistan. However as a substitute, the T.T.P. seems to be regrouping from bases inside Afghanistan, analysts say, and saying its return in Pakistan in a bloody present of suicide assaults.

On Friday evening, the prospect of that return grew to become actual as residents heard the alternate of gunfire for hours.

“The violence and terrorism have returned to the town after a number of years of peace,” mentioned Bakht Ali, 31, a pupil whose uncle was killed in a T.T.P. assault over nonpayment of extortion in 2013. “Via attacking police headquarters, the Taliban confirmed that they’re again with new power. God save us from them.”

Zia ur-Rehman reported from Karachi, and Christina Goldbaum from Kabul.