Eastern Bay of Plenty Police have launched a homicide investigation following the death of a 57-year-old man in Waikato Hospital yesterday afternoon.

The man had been admitted to hospital on Monday after being the victim of a serious assault in Taneatua at around 2pm on Tuesday, says Detective Senior Sergeant Paul Wilson.

"Police were at an address overnight in Cobham Street, Taneatua, where a scene examination will continue today.

"Police would like to hear from anyone who may have information that could assist this investigation.

Anyone with information should contact Police via 105 and quote file number 220214/0810.

Information can also be given anonymously via the Crime Stoppers 0800 555 111 line.