The security forces convoy came under attack while on Kulachi Road in Dera Ismail Khan, an Inter-Services Public Relations statement said.
"The TTP Special Task Force (STF) carried out the attack on the convoy," the TTP spokesperson, Muhammad Khorasani said.
Khorasani further claimed in a statement that an anti-jammer device, manufactured by the TTP's Engineering Unit TEC, was used for the attack.
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The injured were shifted to Combined Military Hospital, DI Khan and the area was deemed to be in danger.
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Security forces cordoned off the area and a search operation and investigation is underway.
No deaths were reported in initial reports.
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