Kenyans on social media have expressed mixed reactions after Attorney General (AG) Prof. Githu Muigai resigned after six and-a-half years of service.

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President Uhuru Kenyatta confirmed his resignation saying he had received Muigai's resignation letter on Tuesday, February 13.

Muigai who has been the custodian of the State Law office, has been replaced by Judge Paul Kihara Kariuki.

President Uhuru nominated Kariuki shortly after Muigai's resignation.

"I have received with regret the resignation of Attorney General Prof. Githu Muigai. I thank him for his service for the last six and a half years. I have nominated as his replacement Judge Paul Kihara Kariuki," Uhuru said on Twitter, on Tuesday afternoon.

Below are reactions on Twitter about the resignation.

@AbalaKinyua 

Does it mean that there is no other tribe that can produce an Attorney General? AG Githu Muigai resigned and President Kenyatta only found it right to nominate Judge Paul Kihara Kariuki as his replacement. 'Tuko pamoja' indeed. #Resist 

@patric_mutwiri

Searching for what informed @Githumuigai 's resignation.

@LesootiaJoel Prof Githu Muigai resignation as Attorney General is a relieve for taxpayers his tenure was unmitigated disaster

@donden1

AG Githu Muigai is like "you guys can continue breaking the law yourselves..I'm out..deuces!"

@retired_captain 

When #Nkaisery died, he was hurriedly replaced by a total dictator #FixingRevisting being done, #GithuMuigai is afraid of implementing #DictorialRule #Jubileeprojects#JubileeRuleDream100yrs mark this tweet, #Paul Kihara Kariuki!!?@Simba_KE Justice Kihara rewarded for serving Uhuru's interest in the court of appeal: 

@Githumuigai 

the mortician fired as AG,Judge Paul Kihara Kariuki the man who has been overturning rulings from High Court has been rewarded for serving @UKenyatta's interest.

@MirikauFredrick 

Githu Muigai 'resignation' is just a political mind game. He didn't resign willingly. Something coming up. He's heading to a more prolific position. Keep watching. And why replaceGithu Muigai with judge Paul Kihara Kariuki? Tribal masters!#Kalongolongo

@owilijunior Githu Muigai has quit as Attorney General. When is President @UKenyatta announcing his own resignation...Asking for NASA supporters

@PAULmai19370169 PROF GITHU MUIGAI JUDGE PAUL KIHARA KARIUKI we shall miss your quote " am not a mortician".you failed to fight for kenyans #GithuMuigaiResigns