The tour guide stabbed both the man and his wife with a knife, killing the woman. The husband survived the ordeal with injuries.
The tour guide and the couple are said to have argued over the occupancy of a dinner table in the Monday night incident at Keekorok Lodge.
The assailant, identified as Lee Changqin, is said to have demanded that they leave their table, insisting that he usually sat at that table.
Drawing a knife from his pocket, the guide stabbed the woman twice in the chest and ribs. She succumbed to the injuries as she was being rushed to Sikinani Health Centre.
The incident shocked more than 100 tourists who were having dinner prompting them to scamper for safety.
Confirming the incident, Narok County Police Commander Jillo Galgalo said the woman’s husband was Tuesday morning flown to Nairobi Hospital for treatment.
The suspect was arrested and taken to Narok Police Station.
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