Bedfordshire Police listed a 38‑year‑old man on Wednesday as the chief suspect in the murders of his spouse and both daughters.
Police discovered the bodies at their family home in Bedford on Tuesday.
The man escaped the UK soon after the discovery.
Authorities have still not explained how he left or where he could be now.
Bedfordshire Hospitals celebrated 25 years since its Metabolic Institute opened.
The unit has supported many people with rare diseases.
A local cyclist also finished a 560‑km London‑to‑Paris ride in three days.
He did it to gather money for MS Society.