Over 100 kg of explosives were used in the deadliest terror attack this year on Pakistani security forces in the country in which 23 soldiers were killed, an official said here on Wednesday. Six terrorists linked to Tehrik-e-Jihad Pakistan (TJP) rammed an explosive-laden truck into the security post in Dera Ismail Khan in the South Waziristan tribal district in Khyber-Pakhtunkhwa province on Tuesday.
