PESHAWAR, Pakistan, Oct 10, (AP): Suspected militants riding on a motorcycle opened fire on a vehicle carrying police officers Thursday in a former stronghold of the Pakistani Taliban, killing two of them and wounding two others, police said.

The attack happened in Tank, a city in Khyber Pakhtunkhwa province bordering Afghanistan, local police official Sher Afzal said. No group has claimed responsibility, but suspicion is likely to fall on the Pakistani Taliban, known as the Tehreek-e-Taliban Pakistan or TTP, who often target security forces.

The TTP are outlawed in Pakistan. They are separate from but a close ally of the Afghan Taliban who control neighboring Afghanistan.The latest violence came a day after at least three people were killed in clashes in the northwestern town of Jamrud between police and supporters of a banned right group Pashtun Protection Movement or PTM, which authorities say supports TTP.

The government has also barred PTM from holding rallies in the northwest, allegedly because the demonstrations are against the interests of Pakistan. PTM denies backing the Pakistani Taliban, and tension was growing Thursday after the group vowed to resist the ban on their rallies.