A Concord woman died Sunday after suffering a medical emergency while swimming in the Merrimack River, authorities said.

Two bystanders attempted lifesaving measures until first responders arrived, but efforts to revive her were unsuccessful.

A 67-year-old Concord woman died Sunday after suffering a medical event while swimming in the Merrimack River. Claire Knowles was swimming after her tube in a mild current when she suffered the ...

Police said 67-year-old Claire Knowles was swimming after an inflatable tube in a mild current and suffered a “medical event” ...

The New Hampshire State Police are investigating the death of a Concord, NH woman who died in the Merrimack River on Sunday.

Authorities were notified about the incident involving a Concord woman at 11:52 a.m. After a preliminary investigation, ...

Claire Knowles, 67, of Concord, was swimming after an inflatable tube in mild current Sunday morning when she suffered a ...

A woman is dead after an incident in the Merrimack River in Concord, New Hampshire, on Sunday afternoon. New Hampshire State ...

New Hampshire State Police are investigating a woman's death in the Merrimack River late Sunday morning. Officials said Claire Knowles, 67, of Concord, had been swimming after her tube when she ...

A 67-year-old local woman died Sunday in Concord after suffering a medical event while swimming in the Merrimack River, according to State Police. Claire Knowles was swimming in mild current when she ...