The incident allegedly happened at FCMB, Onipanu area of Lagos state.
The viral video showed FCMB staff and security guard carrying the unidentified man away from the scene.
It was learnt the man was finding it difficult to breath before he collapsed at the ATM.
Customers, who were on the queue, took their heels as the patient was whisked away.
As of Monday, Lagos has 1,123 confirmed cases of coronavirus with 30 deaths.
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