French police have arrested four people on suspicion that they were planning an terror attack in Paris, French media report.
Three women and four men, were detained at dawn in Paris and the nearby suburb of Seine-Sant Denis, TF1 and BFMTV say.
Police also seized an unused cartridge for a Kalashnikov rifle, an alarm pistol, computer equipment, and a safe during the arrests.
Paris remains on high alert after the attacks in November 13 last year which killed 130 people.
Police had no immediate comment.