Police are asking Christchurch residents to check their gardens for objects that could serve as key evidence in a murder trial

Officers are appealing for the public's help after the murder of sex worker Bella Te Pania on Orchard Road on New Year's Eve.

A man has been charged with her murder, but Police still need to find several items which are important the investigation.

They include a blue lanyard with a car key and an elephant or butterfly keyring, a black Huawei cellphone with a cracked screen, a black Samsung Galaxy, and a small black bag with a shoulder strap.

Police say Bryndwr residents should check their front verges and gardens for the items.

They also want to hear from anyone who has CCTV footage of the area.