How the tragedy unfolded
Sunday, July 28
6.30pm Sanjeev Chada leaves the family home in Ballinkillen, Co Carlow, with his sons Eoghan (10) and Ruairi (5), saying they were going bowling in the Dome centre in Carlow town, below.
Monday, July 29
1.30am Kathleen Chada reports them missing when they haven't returned home.
1.53pm Gardai issue a Child Rescue Ireland (CRI) alert, the first of its kind in this country, seeking the public's assistance in finding Mr Chada and the two boys. Electronic signs on major routes around the country ask motorists to contact gardai if they see Mr Chada's green Ford Focus.
2.47pm Increasingly concerned for the family's safety, gardai issue another appeal with detailed descriptions of what the two boys were wearing. Eoghan was wearing a Canterbury tracksuit and Ferrari baseball cap, while Ruairi was wearing a Middlesboro football jersey.
3.30-4.30pm Mr Chada crashes his Ford Focus at Clooneen, near Westport Co Mayo. Emergency services find the boys' bodies in the boot of the car. Gardai believe the boys were dead before the crash took place. Mr Chada, not believed to be seriously injured, is brought to hospital.
4.17pm Gardai call off their CRI alert.
Carlow to Mayo: How the tragedy unfolded