He could not talk to journalists who visited his home on Thursday as he was in closed talks with other family members.
A police report concluded the incident was a suicide one but they were yet to know the motive because no note was left behind over the same.
Nairobi Area deputy police boss Moses Ombati told The Standard Digital they were treating the incident as suicide. Another officer said they found a rope in the deceased's room, an indication he may have hanged himself.
"Officers who visited the scene concluded it was a suicide incident. Lets wait for more details on the same," said Ombati.
Friends, neighbours and relatives thronged to the minister's palatial home yesterday to condole him. Their faces were full of shock and grief on being briefed on the incident.
Apart from Brian, the Githaes had two other sons.
Brian's friends and classmates described him as jovial and social man who loved hanging out with many people.