Diallo was returning with fellow midfielder Kheira Hamraoui from a Paris dinner organised by PSG last Thursday when armed men held up their car and dragged out Hamraoui, who was then hit on the legs with an iron bar, L'Equipe newspaper reported.

Hamraoui, who required stitches in hospital afterwards, was notably absent from the PSG team on Tuesday evening for a Champions League game against Real Madrid at home, with Diallo playing in her place in central midfield.

PSG said it was working with police "to shed light on the facts. The club will be following the investigation and will look at the conclusions that need to be drawn."

It said that since the attack the club "had taken all the necessary measures to ensure the health, well-being and security of its players."

Diallo, 26, was briefly held by the balaclava-wearing attackers during the assault near Hamraoui's home, but was not injured, a source at the club told AFP.

The Grenoble-born player could not be reached for comment and neither police nor prosecutors gave any reason for her detention.

Diallo was detained by police specialised in organised crime at her home in Marly-le-Roi, a suburb west of Paris.Â

Late afternoon on Wednesday, her detention was extended by 24 hours, Versailles prosecutor Maryvonne Caillibotte told AFP.Â

Diallo could now remain in a Versailles police station until Friday morning.