The terrorist group that attacked Westgate Mall in Nairobi assaulted two more Kenyan towns and promised more violence to come, CTV reported.
Al Shabaab, the Al Qaeda-linked group, killed three people in their most recent attacks and said in a statement that Kenya can not "withstand a war of attrition inside your own country."
"Make your choice today and withdraw all your forces," said Mukhtar Abu Zubeyr, also known as Godane, in a statement released on late Wednesday. "Otherwise be prepared for an abundance of blood that will be spilt in your country, economic downfall and displacement."
During their four-day siege at Nairobi's upscale shopping mall, the group killed at least 62 people and put 167 people in the hospital with injuries.
Godane also said the attack was not primarily directed towards Kenya and was a "retribution against the Western states that supported the Kenyan invasion and are spilling the blood of innocent Muslims in order to pave the way for their mineral companies."
According to regional police chief Charlton Mureithi, Al Shabaab militants stormed the town of Mandera and killed two police officers. They also injured three people and destroyed 11 vehicles.
Just a few hours earlier on late Wednesday, attackers entered Wajir -- southwest of Mandera -- killing one person and injuring four after opening fire and throwing grenades.
Although attacks carried out by Al Shabaab are not knew to Kenya, any attack now is handled different in light of the Westgate Mall assault. The Kenyan government said they are working with international police organization Interpol, who sent a response team to Nairobi on Wednesday.
Interpol official Jean-Michel Louboutin said the team will perform disaster victim identification and use data specialists to analyze evidence from the mall attack.
"Whether it be through comparison of information against Interpol's global databases, or the issuance of a notice to identify a victim, locate a wanted person, or seek additional information about suspects, we will offer all necessary assistance to help bring those responsible to justice," Louboutin said.
He also added Interpol is prepared to offer more assistance from their counter-terrorism and criminal investigation units, if needed.
The attack at Westgate Shopping Mall was the deadliest assault Kenya has witnessed since 1998 Al Qaeda truck bombing at the U.S. Embassy, killing more than 200 people.
