(KUNA) -- A roadside bomb explosion in Pakistani North Waziristan tribal agency, bordering Afghanistan, Tuesday killed over five including three soldiers and wounded many others, said officials. A military convoy was heading toward Miramshah, the regional headquarters, from Bannu district when on Mir Ali road one of the vehicles hit a landmine, being planted by suspected militants, security officials told KUNA. They said the explosion killed three soldiers, wounded one and badly damaged the vehicle. Following the explosion, they added, forces launched retaliatory operation in the area.Forces targeted suspected hideouts of militants, officials said. It was not immediately clear how many people were killed in the operation but according to eyewitnesses two militants were also killed. The explosion occurred only a day after a suicide explosion in the same area killed six soldiers and wounded over 20. The government pointed finger at local Taliban militants who only a day before announced to observe ceasefire in the restless agency for a month. But a purported Taliban spokesman talking to local journalists from undisclosed location by phone denied the charges.