Deadly Toll in Greece as Heat Waves Sweep the Country

Heat waves that have swept across Greece this month continued to exact a deadly toll over the weekend, with the authorities on Sunday reporting another death on a Greek island. At least six tourists remain missing on Greek islands.

The authorities said that a body of a man had been found Saturday on the island of Samos, where a Dutch hiker has been missing for a week. The body has not yet been identified. Searches were also underway for the six other tourists who have gone missing on Greek islands amid searing temperatures this month.

“The problem of missing hikers is not new — we have it every year,” said Constantina Dimoglidou, a police spokeswoman. “But this year, it seems more people became disoriented during the heat wave.”

One of the missing was Albert Calibet, 59, a retired police officer who is a dual citizen of France and the United States, on the Aegean island of Amorgos. Mr. Calibet had set out on a trek alone on Tuesday morning, Ms. Dimoglidou said.

Also missing were two Frenchwomen, aged 73 and 64, on another Aegean island, Sikinos; an Israeli couple in the area of Vytina in the Peloponnese peninsula; and a 55-year-old United States citizen on the islet of Mathraki near Corfu, the authorities said.

The announcements came only days after the remains of Michael Mosley, a British medical journalist and documentary maker, were found on the island of Symi after his disappearance during a walk. At least three other tourists have died while out walking during the extreme heat this month.