John Bugembe told court that Kasiwukira and Nabikolo the prime suspect in this case developed misunderstandings when he took on a second wife.
He says efforts to reconcile the couple were not successful and the two continued to have constant fights.
Bugembe the 12 witness was appearing on Monday 18th April before high court judge Wilson Masalu Musene.
Another state witness Karimani Silver a Bodaboda cyclist has told court that he was hired by the late Kasiwukira to trail Sarah Nabikolo and her sister Sandra Nakungu’s movements one month before his death.
He added that Kasiwukira had suspected that his wife and sister in law were visiting witch doctors.
Sarah Nabikolo together with her sister Sandra Nakungu and a police officer attached to Muyenga police station Ashraf Deden are charged with the murder of Kasiwukira.
They committed the alleged offence in October 2014.
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