Paris police say a suspect believed to have wounded four people in a knife attack near the former offices of satirical newspaper Charlie Hebdo has been arrested.

A Paris police official said while authorities initially thought two attackers were involved, they now believe it was only one person.

The suspect was detained near the Bastille plaza in eastern Paris.

It is unclear what motivated the attack Friday or whether it had any link to Charlie Hebdo, which moved offices after an attack by Islamic extremists in 2015.