Feyenoord ultras allegedly attacked homeless people and damaged cars and street furniture in central Sevilla in the early hours of Wednesday, ahead of their Champions League clash with Real Betis.

Around 50 hardline supporters were involved in the disorder, prompting intervention by Policia Local and Policia Nacional, reports Diario de Sevilla.

The group allegedly assaulted people sleeping beneath the covered walkways on Calle Imagen and confronted protesters at the encampment beneath the Setas de la Encarnacion.

Police charged on nearby Calle Regina to bring the violence under control.

Rubbish bins, large plant pots and other street furniture were damaged around the Setas and Alameda de Hercules, along with some vehicles.

The unrest came ahead of Wednesday’s 9pm match at La Cartuja, which Spain’s anti-violence commission had already classified as high risk.

Feyenoord was allocated 3,385 tickets for the fixture, although that figure does not confirm how many supporters have travelled to Sevilla.

The Dutch club required away tickets to carry each supporter’s name and passport or identity document number, with checks planned at the stadium entrance.

The high-risk designation entails additional security measures, including reinforced policing, segregation of rival supporters and tighter entry controls.

It is the second Betis-Feyenoord meeting in Sevilla to receive the classification this year, following their Europa League fixture on January 29.