The wife allegedly committed the crime while the man had retired to sleep later the same day.
The spokesperson for the state Police Command, Grace Iringe-Koko, confirmed the woman’s arrest to our correspondent on Thursday.
Iringe-koko, a Superintendent of Police, said the woman was arrested by operatives who had been on her trail after she fled on realising the enormity of her crime.
She stated, “The wife has been arrested and is in Police custody. She was arrested this morning (Thursday) and brought to the command.
“She will be interrogated after which necessary action will follow. So for now, the investigation is ongoing.”
The suspect, who hails from the Obite community in Ogba/Egbema/Ndoni LGA, Rivers State, had attacked her husband hours after he confronted her on the mission of a strange man who was lurking around her and her younger sister.
The victim said his wife suddenly started putting up strange behaviour soon after her younger sister moved in to live with them.
Nwankwo, whose face and body showed scary injuries from the attack, also said he was compelled to send his sister-in-law packing due to her disrespectful attitude towards him in their home, but said his decision did not go down well with his wife who opposed it, leading to a heated argument.
He stated that little did he know that the matter would escalate when he confronted his wife about the strange man.
Nwankwo said, “I had told my wife’s younger sister to leave my house because of the way she had started dressing, and the way she occupied my matrimonial bed even when I was around.
“No young guy will tolerate such a behaviour, but my wife refused the younger sister to leave the house.
“I also saw my wife alone with one tall black guy in the shop I rented for her. Not that he is in for business, but he followed my wife and her sister here and there.”
The man added, “Following all these, I called her younger sister and gave her N2,000 transport fare to go home so that I could actually understand what was going on in my house.
“But my wife got upset. While I went to bed to sleep, she poured boiled groundnut oil on me, and then started hitting me with hammer.”