An Austrian mayor has said his town has had enough of Afghan migrants carrying out sexual assaults as it emerged that some locals have discussed setting up vigilante patrols.

The Mayor of Moedling, south of the Austrian capital Vienna, spoke out after a girl was groped by four men in a restaurant toilet.

Local media said nobody came to help the girl when she cried for help and that the perpetrators, reported to have been young asylum seekers, were able to flee.

The Mayor of Moedling, south of the Austrian capital Vienna (file picture), spoke out after a girl was groped by four men in a restaurant toilet

One group of residents has reportedly talked about setting up vigilante patrols amidst growing unrest in the town.

It comes against a backdrop of unease in the country following a number of similar attacks recently.

Over the weekend, two young mothers pushing prams claimed to have been attacked in a park in daylight.

The suspect groped and fondled one of the young women, and when the second mother tried to stop him, he attacked her instead and tried to rip off her dress.

Police later arrested a 20-year-old man who they said was an asylum seeker from Afghanistan who had arrived in the spring.

He is currently being held in investigative custody.