By Cyrus Ombati and Phillip Mwakio
The death toll of security personnel in the Mombasa grenade attack rose to three after two prison warders who were injured died while undergoing treatment.
The two were among police officers injured after a grenade was hurled into a police truck by people suspected to be Muslim radicals during protests over the killing of cleric Sheikh Aboud Rogo.
This brings to three the number of officers killed in the Tuesday grenade attack. Twelve others were critically injured.
Meanwhile, a major security operation is underway in Majengo area in Mombasa ahead of President Kibaki arrival on Wednesday.
Security personnel including the General Service Unit are carrying out a swoop in the area and have arrested dozens of youth.
Internal Security Minister Yusuf Haji said police have arrested 32 people and warned youth to desist from violence.
Speaking after chairing a security meeting in Mombasa, Haji said additional security has been deployed to the coastal town.
Chaos erupted in Mombasa on Monday after gunmen shot Rogo and continued on Tuesday.
The violence escalated with arsonists torching churches and vehicles.
On Tuesday, police officers including prison warders in the ill-fated truck were responding to a distress call that some youth were planning to attack a church in Kisauni.
They were confronted by the youth who hurled the grenade into the truck.