Lenku says a competent a team comprising local and international experts is compiling the report after they collected what he termed as “crucial samples” from the mall.
Speaking in Mombasa after chairing a security meeting, Lenku however said it was not appropriate to talk about the progress of the investigation.
“There is a forensic investigation going on and therefore it’s not appropriate to talk about the matter on Westgate,” said Lenku.
They have been conflicting reports on the number of causalities pulled from the wreckage of the mall, with fears that some hostages were feared buried in the rubble but the official death toll remains at 67.
Recent CCTV footage indicates that the attackers were only four and not 10-15 as early indicated by the government.
Lenku defended the security officers deployed at the mall saying they did a commendable job, despite emerging footage showing Kenya Defence Forces leaving the Nakumatt store with a paper bag each after gaining entry.
Lenku assured Kenyans that the country is safe and security agencies are working hard to deal with terror threats.
“Terrorism is global problem that is being addressed. We are doing our part as a country… we have had our share(of attacks) but our security have been able to recover and pre-empt criminal activities,” said Lenku.
He warned some mosques in Mombasa that continue to engaging in radicalization and funding of Al Shabaab activities in the country.
He held talks with leadership of Masjid Musa mosque situated in Majengo in Mombasa accused of supporting the Al Shabaab terror group.
The mosque was used by the late controversial Muslim leader Sheikh Aboud Rogo and Sheikh Ibrahim Swaleh who was killed a few weeks ago on the Mombasa Malindi highway.
Anti-terrorism police officers are profiling mosques, schools and madrasas and several radical clerics who indoctrinate youths to join Al Shabaab terror group.
A leaked intelligence report reveals that as a result of widespread unemployment, thousands of youths in Mombasa have decided to leave the country for Somalia, Yemen and the Arab Gulf countries to join the al Qaeda terror group.
The rag-tag militant group has built a cross-border network with the aim of recruiting and training youths to fight in Somalia and carry out attacks.