Three people were killed in a US drone strike in Miranshah area of North Waziristan on Thursday, said officials. The drone fired four missiles on a house in an area near Miranshah, the main town of troubled tribal agency. Under President Barack Obama, the United States has drastically stepped up drone strikes in Pakistan but refuses to discuss them publicly. Nearly 60 US drone strikes have been reported in Pakistan so far this year, dozens of them since US Navy SEALs killed al Qaeda leader Osama bin Laden in Abbottabad on May 2, 2011.