A baffling case remains unsolved 16 years after a man whose identity is a complete mystery died on a beach in Ireland.
Back in 2009, a man checked in to the Sligo City Hotel on June 12, giving his name as Peter Bergmann.
He paid for his stay in cash and gave his address as being 'Ainstettersn 15, 4472, Vienna, Austria'.
The man, who arrived smartly-dressed and carrying a worn-out bag, remained at the hotel for most of his time in Sligo.
He was 5ft 10in tall with short grey hair and blue eyes, and is believed to have been aged in his late 50s or early 60s, with hotel staff noting that he spoke with a thick German accent.
Security cameras at the hotel captured him smoking frequently and staff assumed from his appearance that he was a working professional possibly in the area for business.
For three days after he checked in, the man was seen leaving the hotel with a purple plastic bag full of items, which was empty when he returned.
What the man threw away has remained a mystery as he emptied the bag and discarded the items in blind spots that were not covered by surveillance cameras.
Authorities noted that his movements appeared to be calculated, and he was later seen buying eight international stamps from the post office with air mail stickers.
The following day, the man asked a taxi driver to take him to a quiet beach location where he could swim, with the driver suggesting Rosses Point before driving him there.
The same driver later returned and dropped him off at a bus station in the town.
The man checked out of the hotel on June 15 at around 1PM, before heading back to the bus station with the purple plastic bag, a black shoulder bag, and a different black luggage bag than the one he'd arrived with, which was never found.
He stopped at a cafe where he had a sandwich and a coffee, and was seen writing something on a piece of paper which he started at for a few minutes before tearing it up and throwing it away.
In the afternoon, he returned to Rosses Point Beach, where 16 witnesses reported seeing him standing fully-dressed on the beach with his shoes in his hand.
He was still on the beach at 10.50PM, where he interacted briefly with a local who said hello to him.
On the morning of June 16, the man's body was discovered at the beach by a father and son, wearing only a T-shirt and underwear, with his other clothing on the shore nearby.
An investigation was opened by the Gardaí to determine who the man was, but was closed after five months when they were not able to identify him or find any leads.
It was discovered that the man had made his way to Sligo from Ulster, but there was no record of his entry into Ireland, and the reason for his visit still remains a mystery. No passport or identification documents were ever found.
A postmortem showed that he was in poor health and was in the advanced stages of prostate cancer and had tumors on his bones, while his heart showed signs of previous ischaemic heart disease.
Despite suffering from these conditions, no traces of medication were found in his system.
The unknown man's official cause of death was ruled to be acute cardiac arrest, as there was no signs of struggle or injury, and no water was found in his lungs, leading the coroner to believe his heart failed moments before he entered the water.
In the 16 years that have followed, authorities have made public appeals in Austrian and German publications to try and identify the man, however, no relatives or friends have come forward.
Police also discovered that the address he'd given in Austria has not existed for several years.
As of today, the man who called himself Peter Bergmann remains unidentified, with nothing known about his past life - almost as if he never existed before arriving in Sligo.