Nairobi - Kenyan authorities say militants from the same extremist group that took over a Nairobi mall have attacked a security post near the Somali border, killing two police officers.
The attack early on Thursday was the second by al-Shabaab militants following the bloody four-day standoff at the Westgate Mall that ended Tuesday in which at least 67 people were killed.
Al-Shabaab threatened in a message late on Wednesday that if Kenyan troops remain in Somalia, Kenyans must "be prepared for an abundance of blood".
Regional police chief Charlton Mureithi says the militants' attack in the town of Mandera also resulted in three police officers injured and 11 vehicles destroyed.
Wednesday night, militants attacked the border town of Wajir. One person was killed and four wounded after a gunman opened fire and threw grenades.