Detectives are asking for the victims to come forward.
A man has been arrested but officers say they are keen to trace those targeted.
The assaults are described as spontaneous, violent and target women walking on the street in the evening.
Detectives are asking for the victims to come forward.
A man has been arrested but officers say they are keen to trace those targeted.
The assaults are described as spontaneous, violent and target women walking on the street in the evening.