Three girls died in the attack.

Several other children, plus a couple of adults, suffered serious injuries.

A vigil will be held to honor them tonight in Southport at 6 p.m. local time.

SOUTHPORT, ENGLAND - JULY 30: Tributes to the victims are left by wellwishers on July 30, 2024 in Southport, England. A teenager armed with a knife attacked children at a Taylor Swift-themed holiday club in Hart Lane, Southport yesterday morning. Three children have died while five children and two adults remain in a critical condition in hospital. A 17-year-old boy has been arrested. (Photo by Christopher Furlong/Getty Images)

Tributes to the victims of the knife attack that took place during a Taylor Swift-themed dance and yoga workshop in Southport, England.Christopher Furlong/Getty Images

The families of the children have shared tributes in the wake of this unspeakable tragedy.

Love from Your Hero Daddy and Mummy.

As a school community we will be grieving together as we stand with others in Southport.

Two adults also remain in critical condition.

These were just little kids at a dance class.

I am at a complete loss for how to ever convey my sympathies to these families.