incident
The French word 'incident' is a direct loanword from English and is used in the same way as in English. It refers to an event or occurrence, often unexpected or undesirable, that interrupts normal proceedings or causes a disturbance. For example, 'Un incident s'est produit pendant la réunion.' (An incident occurred during the meeting.)
There was an incident during the concert.
This sentence is used to indicate that something unexpected happened during the concert, which is referred to as an 'incident'. In French, 'pendant' expresses 'during', and 'le concert' refers to 'the concert'.
We must report this incident to the authorities.
This sentence is expressing the necessity ('Nous devons', 'We must') to notify or 'report' ('rapporter') the incident ('cet incident') to the people in charge, known as 'the authorities' ('aux autorités').
His behavior caused an incident at the meeting.
In this sentence, a person's behavior ('Son comportement') is said to have prompted or 'caused' ('a causé') an unexpected event or 'incident' ('un incident') to take place at a certain gathering, referred to in this context as 'the meeting' ('à la réunion').