Sources including a bomb expert have revealed that a fertiliser-based bomb was used by suspects behind Monday's blast at Assanand's house along Nairobi's Moi Avenue. The revelation comes even as police launched a massive manhunt for two suspects linked to the incident in downtown Nairobi. Police say the blast was caused by an improvised explosive device. Meanwhile, Prime Minister Raila Odinga has announced that the government will meet the medical expenses of the victims of the blast. Hussein Mohamed brings us the latest on this developing story.

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Kenya Seeks Blast Suspects

• Terror a Threat to Peaceful Poll - Saitoti
• Nairobi Hunts Bombing Suspects
• Foreign Sleuths Join Moi Avenue Probe
• Nairobi Bomber Used Fertilizer - Police
• Five Still Hospitalised After Nairobi Blast
• Govt Will Foot Blast Victims' Bills - Raila
• A Flashback of Bomb Attacks
• Country on Alert After Kenya Blast
• Police Change Tact, Probe Explosives Link
• Nairobi Blast an Act of Terror - PM
• What Electrical Fault, Kenya Power Asks
• Victims Recount Moments Before Nairobi Blast
• Blast Was Massive - Witnesses
• Government Bamboozled Over Cause of Blast
• Kenya Blast Likely Due to Electrical Fault - Iteere
• Explosion Rocks Nairobi Building
• VIDEO: Kenya: Moi Avenue Blast
• Moi Avenue Blast Victim Dies

Kenya Assures Security Despite Al Shabaab Threats

• Saitoti Assures of Security, Calls for Vigilance
• Shabaab Threats Warrant More Security in Nairobi
• Al Shabaab Threatens to Bomb Nairobi Skyscrapers

Kenya Blast Concerns Tourism Sector

• Tourists Assured Country Remains Safe
• VIDEO: Kenya: Tourism Stakeholders Security Fears
• Tourist Arrivals in Q1 Show Marginal Drop