PARIS

Nine people remain in police custody for last week’s stabbing attack at the former offices of Charlie Hebdo magazine in Paris, franceinfo TV reported Sunday.

Two people were seriously injured on Friday while taking a cigarette break when the assailant, wielding a meat cleaver, struck them outside the former offices. The two are journalists at the audio-visual company First Line that now occupies the space.

Charlie Hebdo, a celebrated satirical French magazine, first made headlines in a terrorist attack there in January 2015.

The main suspect – an 18-year-old man known only as Hassan A., of Pakistani origin – confessed to the stabbings, saying his aim was the Charlie Hebdo staff. His custody was extended by 48 hours.

The other suspects in custody include the suspect's younger brother, six former roommates from one residence, a former roommate from another residence, and an acquaintance. Another 33-year-old suspect was released yesterday.

France's National Anti-Terrorism Prosecutor's Office opened a probe in the hours following the attack. Police have yet to uncover a record for the lead suspect, nor a motive.