A law enforcement official says the person believed responsible for an explosion at a California fertility clinic posted online ramblings including a belief that the world should not be populated.

The father of Guy Edward Bartkus, the suspect in the Palm Springs in vitro fertilization facility explosion, says that he was “shocked” when a relative reached out and said his son was implicated in the bombing.

A vehicle bomb explosion at a Palm Springs fertility clinic killed two people and injured 22, with the FBI investigating the incident as a suspected act of domestic terrorism linked to 25-year-old Guy Edward Bartkus of Twentynine Palms.

An explosion that heavily damaged a fertility clinic in the tony California city of Palm Springs appears to have been intentional, local authorities said. One person was found dead, and the FBI said it was sending investigators, including bomb technicians, to the scene.

One person was reportedly killed after a car explosion damaged a fertility clinic in Palm Springs, and police are calling it an “intentional act of violence."

A California neighbourhood was evacuated amid dramatic scenes on Saturday as the FBI launched an investigation in Twentynine Palms over fears of a potential “blast zone”.