Kenyan police say gunmen opened fire on Chinese construction facilities in an eastern area, days after Islamic extremists claimed responsibility for a deadly attack in Nairobi.National police chief Joseph Boinnet says security forces fought off the attackers at Shimbirey near Garissa town on Sunday. There are no reports of casualties.Al-Shabaab, an extremist group linked to al-Qaeda and based in Somalia, claimed responsibility for a 2015 attack in Garissa that killed 147 people, mostly students. Al-Shabaab also says it carried out the January 15 attack at a hotel and office complex in Nairobi that killed 21 people, including a police officer. All five assailants also died.* Sign up to News24's top Africa news in your inbox: SUBSCRIBE TO THE HELLO AFRICA NEWSLETTERFOLLOW News24 Africa on Twitter and Facebook.