"We are also appealing to anyone who may have picked up anyone walking in the River Rd or the Te Mata Rd area during those times."
De Lange said police were following "strong lines of inquiry" in relation to this woman's death and acknowledge that this has been a concerning time for the community.
"This weekend we will have our mobile police bus at the River Rd Recreational Reserve to speak with anyone who may have been in the area last weekend and have information they think may be relevant to police."
Anyone with information is asked to contact police on 105 quoting file number 220905/1265.
Information can be provided anonymously to Crime Stoppers on 0800 555 111.