STREET violence disrupted New Year's Eve celebrations in two Wimmera centres.
A Horsham man, 22, sustained serious injuries after he was assaulted by two unknown men in the city.
The assault was near the corner of Wilson and Firebrace streets about 4.30am yesterday.
Horsham Sergeant Pat Harrington said the man was taken to Wimmera Base Hospital with non-life-threatening injuries.
Police are also investigating wilful damage to a house in Winifred Street, Horsham.
At least two passersby used rocks and bitumen pieces to smash a house window after midnight on Monday.
The unknown vandals also damaged weatherboards on the same house.
Sgt Harrington said any witnesses to the assault or property damage could call Horsham Police Station on 5382 9200.
Police also attended noise complaints about residential parties in the Horsham area, advising revellers to lower the volume of their music.
Sgt Harrington said police were otherwise pleased with most people's behaviour.
Stawell police requested help from Ararat members to deal with two street assaults.
Police allege an unknown attacker hit a man, 20, in Main Street, Stawell, before midnight on Monday.
The man attended Stawell District Hospital for observation.
Two men in their 30s later had an argument in Jubilee Road, Stawell, between 1.45am and 2am yesterday.
Stawell Sergeant Bryan Anderson said their disagreement became physical and both men sustained minor injuries.
He said both incidents were minor and involved alcohol.
Sgt Anderson said witnesses to any of the alleged assaults could call Stawell Police Station on 5358 8222.
St Arnaud and Ararat police reported a quiet New Year's Eve in their areas.