A 60-year-old man, Danjuma, aka Black, his son, Ibrahim, 35, and Aminu Gaye, also 35, died in a pit latrine while trying to recover a phone.
A fourth person, Abba Alasan, 28, was rescued alive.
The incident occurred on Sunday morning at Yar’Gwanda in Tsanyawa LGA, Kano.
This was disclosed in a statement by the Kano State Fire Service spokesman, Saminu Abdullahi, on Sunday.
“We received an emergency call from Tsanyawa Fire Station at about 11:00 a.m. from one Aminu Yar’gwanda that four men had been trapped inside a pit toilet.
“We immediately sent our rescue team to the scene at about 11:15 a.m. Danjuma was trying to retrieve a phone that fell into the pit toilet, when he got trapped. Thereafter, his son entered the pit toilet to save his father and also got trapped.
“Gaye and Alasan also entered to rescue both men, but they also got trapped,” Mr Abdullahi said.
Mr Abdullahi also mentioned the first three victims were rescued unconscious, while the fourth victim was rescued alive. He said the victims were handed over to Superintendent of Police Iro Lado at the Tsanyawa police division.
The police conveyed the victims to Bichi Special Hospital for medical attention, where doctors on duty confirmed the three dead and one alive.