PARIS (Sputnik) — Bouhlel's phone was found after the attack was carried out, BFMTV broadcaster reported, citing a source.
According to the media, on Thursday, at 22:27 local time [21:27 GMT], terrorist sent a message ''bring more weapons."
The media noted that a person who received that message could be among five suspects detained by police.
On Thursday night, a truck rammed into a large crowd that was celebrating Bastille Day in Nice. At least 84 people, including children, were killed and dozens of others were injured.
Earlier in the day, media reported that Daesh terrorist group claimed responsibility for the attack.