KARRTORP, Sweden -- Swedish police say over 15,000 people have participated in a rally against last week's neo-Nazi attack in a Stockholm suburb.

Police spokesman Kjell Lindgren says the Sunday demonstration remained peaceful. Support rallies were also held in Malmo, in southern Sweden, and Lulea in the north.

The events were organized as reaction against an incident last Sunday when neo-Nazis hurled bottles, torches and firecrackers against a smaller anti-racism rally in Stockholm's suburb of Karrtorp.

Police detained 28 people after the attack, in which three people were injured. A neo-Nazi group called the Swedish Resistance Movement claimed responsibility for the attack.