The businessman and philanthropist was reportedly airlifted to United State in critical condition late last year for an operation. He returned home in March after a six-month stay in the US where he reportedly received specialized treatment for an acute cancer of the colon.
Mr Odinga was accompanied by his legal adviser Paul Mwangi.
Late last year, Raila had ordered NASA supporters to boycott Haco products (Kirubi’s company), for bankrolling campaigns of the Jubilee party, which the leader said was irregular.
Mr Kirubi looked frail and in one photo but is said to be getting better by the day.
Mr Kirubi, who is in his late seventies, is the single-largest shareholder of the Nairobi Securities Exchange traded Centum Investments with a 28.64 per cent stake.
His has business in a different range of interests.
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