Hanoi is hot, and families are ignoring warnings to seek relief in Linh Dam Lake, despite the dangers of drowning because they and their toddlers can't swim.

On June 4, a young man dived into the lake and did not return. His body was found the next day. Two more bodies have since been found.

By the lake is a warning sign against swimming; not least because of the quality of the water, but that their are no lifeguards to rescue those who can't swim.

As the heat hits 38-40C, people ignore the danger to find relief.

Hundreds of people - adults and children - flock to the lake each day at around 5pm. Some take advantage of a new vendor service, offering lifejackets and flotation devices. Many bring a foam board or plastic containers to keep their heads above water.

Linh Dam Lake has recently been dredged of mud and garbage to try to clean up the water, but the depth - tens of metres - is deceptive.

Authorities of Hoang Mai District want to fence the lake to raise awareness of the danger.

People flock to lake to cool down

Using foam boards

Plastic containers an alternative

 Warning sign against swimming