The video, which was
published by website Loopsider, appears to show officers performing the Macarena in close proximity to each other, taking selfies and enjoying refreshments.
Loopsider said the party took place on 22 January to say goodbye to a colleague.
The police prefecture
tweeted a statementconfirming that the party took place without social distancing.
"A leaving party was organised at the Aubervilliers police station during curfew and without respect for social distancing measures. An investigation is under way and sanctions will taken against the participants," it said.
Masks and social distancing are normally required in the police station and the number of people allowed in a room at the same time is limited, a spokesperson said.
On Wednesday France reported its biggest one-day jump in cases since mid-November, with a further 27,000 infections.
The country's health minister Olivier Veran said on Thursday that the curfew measures were "probably insufficient" to curb the growing circulation of new variants of Covid-19.