A third suspect has been arrested in connection with a series of killings at hotels in the southern Nigerian city of Port Harcourt, police say.
At least eight women have been found strangled in various hotel rooms in Nigeria’s oil capital in Rivers state since August.
On Wednesday, more than 70 women’s groups and NGOs embarked on a peace walk to protest over the killings.
They demanded that the government and security agencies apprehend those who are responsible and make the city safe.
Police Commissioner Mustapha Dandaura told the protesters of the third arrest when they went to the department’s headquarters.
He said police apprehended a man in a hotel who was about to strangle a woman with a towel.
Earlier on Wednesday, police told the BBC that one man had been arrested after he offered around $80 (£70) to spend the night with a woman in the city.
The other suspect was arrested in Kaduna in central Nigeria.