Geneva police raided a pizza restaurant on Saturday evening following reports of someone brandishing a gun.
Scores of heavily armed officers together with a dog unit sealed off the restaurant on the rue de Savoises near the Plainpalais.
The restaurant is currently closed due to financial difficulty. The police say there was an argument between the owner and two others.
No details of the potential charges have been released.
Geneva could foot the G7 bill
Geneva fears it will be left with the security bill from a G7 summit just across the border in Évian, according to 24 heures.
US NGO discovers Swiss child abuse cases
Switzerland relies too heavily on an American NGO to detect child sexual abuse online, raising questions about the country's ability to protect children on its own.
French singer banned by Paleo
The Paléo Festival in Nyon says it will no longer invite French singer Patrick Bruel, after a former volunteer accused him of inappropriate behaviour.
Cars going uninspected
The cantons are struggling to keep up with mandatory vehicle inspections, leaving more than 550,000 checks overdue nationwide.
War may lead to rent rises
Rents may rise again, says the bank Raiffeisen.
Not a heatwave, yet
Summer has arrived, with temperatures climbing past 30 over the long weekend. Basel reached 31 and Sion hit 32.4, but MeteoSwiss, says this does not yet count as an official heatwave.
