Dangerous terrain hampers search for accused cop killer

Specialised equipment such as armoured BearCat vehicles are being used in the search for a fugitive. (Simon Dallinger/AAP PHOTOS)

Dangerous terrain and bad weather is impeding the search for a fugitive accused of killing two police officers as tributes are paid to the men.

Detective Leading Senior Constable Neal Thompson, 59, and Senior Constable Vadim De Waart, 35, were shot dead while attempting to serve a search warrant at a Porepunkah property.