"The police investigations made it possible to identify the Swiss nationals, aged 18 and 24. The two men were arrested in Winterthur on Tuesday afternoon, in coordination with the Austrian authorities ", it is mentioned in the announcement issued by the police of the canton of Zurich.
"The possible connection of the two arrested with the alleged perpetrator of the attacks is the subject of the ongoing investigations by the competent authorities," he added.
By noon on Tuesday, Austrian police had arrested 14 people in connection with the main suspect in the Vienna attack.
A 20-year-old Austrian national from Northern Macedonia is the main suspect in the attack that left 4 dead and 22 injured.
The suspect tricked the denationalization program and gave the impression that he had joined, while doing the exact opposite, said the Austrian Interior Minister.
The Islamic State terrorist organization (ISIS) has claimed responsibility for the attack in Vienna, Reuters reported, citing the group in a statement to the Telegram.