Nairobi Police Chief Japheth Koome told Capital FM News that the man bled to death after the attack that happened in their house Tuesday evening.
He pointed out that the two argued over the remote before it degenerated into a fight.
“The couple were watching TV together when they started bickering on who should have the remote control. Things got out of hand and the woman ended up stabbing her boyfriend,” he explained.
He said the man died minutes later on arrival at a local hospital.
“The man died soon after being taken to hospital. Indeed, the woman is now in our custody and she is due to be charged with murder,” he stated.
The incident follows a similar one in Nyayo Estate in Embakasi where a man allegedly killed his girlfriend and left the decomposing body in his house.
The woman’s body was found in the house after four days.
In the meantime, three suspected thugs were Wednesday night killed in separate robbery attempts in Nairobi.
Koome said the gangs were separately attacking and trying to rob pedestrians and business premises when they were killed.
Two of them were shot dead by police while the third one was lynched by a mob.
The first incident happened in Majengo slums where police shot dead a suspected thug and recovered a Berreta pistol from him.
Police indicated that another suspect was killed in Pipeline area and a pistol found on him.
In Zimmerman, a man was lynched in a botched robbery.
In yet another incident Tuesday, a man was shot dead in a shop along Kirinyaga Road in the city in a robbery by gunmen.
Police say a gang of three raided a glassware shop and ordered customers who were inside and management to lie down and surrender their valuables and cash.
In the process, one of the customers present is said to have argued with the gang prompting a shooting that left him with a gun wound in the head and chest.
The gang escaped after grabbing unknown amount of cash and valuables.