Southampton's Sikh leaders appealed for "peace and harmony" after Tuesday night clashes left multiple police officers injured during protests over the murder of 18-year-old Henry Nowak.
The unrest flared near killer Vickrum Digwa's home after demonstrators marched from Southampton Central Police Station, throwing chairs, cans and flares at riot police and forcing officers and three vans to retreat.
Digwa, 23, was jailed for life with a minimum 21 years on Monday for stabbing Nowak with a blade he said he carried for religious reasons, then falsely claiming he had been attacked and leading police to arrest the dying victim.
Community leaders and faith figures said Digwa's use of a kirpan did not reflect Sikh beliefs, while MP Satvir Kaur and Bishop Rhiannon King warned the violence was deepening fear and tension across Southampton.