The Serie A match between Cagliari and Napoli was stopped for 6 minutes. What happened?

The Serie A match between Cagliari and Napoli was interrupted for seven minutes during the first half after fans from both teams began throwing objects at each other.

Details: Around 400 Napoli fans were present at the stadium in Sardinia. The conflict started due to an offensive banner displayed by the visiting ultras, which enraged the local supporters.

Recall: There has been longstanding tension between the two fan groups, which intensified after an offensive banner reading "Hunt the Sheep" was displayed on the ferry arriving today. Shortly before the unrest, another banner featuring sheep was shown at the stadium, further aggravating the situation.

Fans began throwing objects over barriers and rails, and the Cagliari ultras launched fireworks and smoke flares into their own penalty area, preventing the game from continuing.

Update: As of the 70th minute, the score is 2-0 in favor of the visitors, with Napoli aiming for their third consecutive victory.