Woman has 1-in-70-million birth

A woman in the US has given birth to two sets of identical twin boys at the same time, a one-in-70-million chance.

Tressa Montalvo was not on any fertility drugs and said that she and her husband were simply trying to have a brother or sister for their two-year-old son.

When she was 10 weeks pregnant, her doctor told her she was having twins, and on a subsequent visit, the doctor detected a third heartbeat.

The family were later told they were having four babies, not quadruplets, but two sets of twins.

She gave birth to the four boys at The Woman’s Hospital of Texas in Houston.