There was confusion at Obadeyi Ajala, Ijaiye end of the Lagos-Abeokuta Expressway following the discovery of a suspected kidnappers’ den around a canal in the area.
An abandoned house near the canal was also reportedly used as a hideout by the suspects.
The crowd laid siege to the hideouts around 7am after a highway sweeper with the Lagos State Waste Management Agency raised the alarm.
It was learnt that the official had heard the voice of a woman calling for help from the canal.
A suspected kidnapper, who fled from the canal, was caught by a mob and set ablaze before the arrival of the police at the scene.