Police Scotland can confirm that enquiries are ongoing following the deaths of four geese, which were reported to the Police by concerned estate workers who had found the birds on their land near Kingussie in late April 2019.
Subsequent post-mortem examination of the birds found that they died as a result of ingesting a banned pesticide.
Searches by Police Scotland officers have been carried out in the area around Loch Gynack near Kingussie.
Officers are advising any members of the public or dog walkers who use the area recreationally to be aware and to consider their safety - or that of their pet - if walking in the area.
Inspector Vince Tough, Highlands and Islands Wildlife Crime Coordinator, said: 'We do not wish a member of the public, a dog or any other animal to become unwell where it can be avoided'.
"Our enquiries are ongoing to establish the full circumstances of this incident.
"In the meantime I would urge anyone who walks their dogs in the area to be aware as a precaution.
"Anybody who has information is asked to contact Police Scotland immediately on 101, using reference NM1041/19, or call Crimestoppers anonymously on 0800 555 111."