While his department was responsible for voter identification and result transmission technology for the elections, it's unclear whether his killing was related to the election.
We are all Kenyans irrespective of tribe. Voting mostly started smoothly, the election commission said, despite some isolated incidents and delays.
Almost 20 million Kenyan voters were scheduled to elect a new president for East Africa's richest economy in a tight race on Tuesday, which pitted incumbent President Uhuru Kenyatta against his longtime rival, Raila Odinga. "I know our forefathers would be proud of all of us as their children", said Kenyatta.
Odinga, 72, flagbearer of the NASA coalition, is taking his fourth and likely final stab at the presidency.
Odinga was also a candidate in the 2007 election, which was followed by deadly violence fueled by ethnic rivalries.
It is feared that Tuesday's elections will have parallels with the 2007 elections, which resulted in violence that killed 1,100 people and forced 600,000 to leave their homes.
Under the new constitution passed in 2010, a presidential candidate must win a minimum of 25 percent of the votes in at least 24 of the 47 counties to secure the presidency. Nairobi, the capital, has emptied as people have crowded onto buses to their rural homes-some because they are registered to vote there, but many because they fear post-election violence.
Gladys, a mother of two queuing at the Kilimani Primary School to cast her vote, was adamant that previous election violence meant that "Kenyans had learned their lesson".
Mr Odinga's Luo, the second largest ethnic group, has yet to seize the top job.
British model drugged, stuffed in bag and 'auctioned as sex slave'
Police said no one took part in auction and it was unclear if Herba was serious about the plan or whether he was a "fantasist". Her kidnapper allegedly threatened to auction her on the internet while trying to extort €300,000 (£270,000) from her agent.
Polling staff will be accompanied by security officials and polling stations will be heavily guarded to enable voters to exercise their democratic rights, said electoral commission CEO Ezra Chiloba.
With many people still waiting, some centres remained open beyond the official end of voting to ensure people in the queue could cast their ballots.
"We've learned a lot in the past, so we don't want such repetition in this election", Otieno said.
Whatever happens, this will be the last battle of the dynasties: Uhuru Kenyatta, the son of Kenya's first president, against Raila Odinga, the son of its first vice-president and a man who also spent much of his political career in opposition. While there has been reports of glitches at some of the polling units which numbers about 40,000 or more across Kenya, Limo says for most part, things have gone well.
If no victor is declared, the election will go to a runoff, which would be a first in Kenya's history.
The IEBC said in a statement that extra ICT support staff have been brought into service to resolve minor technical issues.
According to Guardian, over 180,000 security officials have been deployed to keep the peace in areas where tensions are high.
Former U.S. Secretary of State John Kerry is among thousands of global observers who have been monitoring the election process.