A same-sex American-Spanish couple have won a high-profile custody fight against a Thai surrogate mother who decided she wanted to keep the baby when she found out they were gay.

A 24-year-old Japanese businessman who has 16 surrogate babies and an alleged desire to father hundreds more is under investigation.

The family of a young man who went on a deadly shooting rampage in two Colorado religious centres before killing himself said they were "groping for answers" and praying for the victims' families.

Authorities searched a home in the US state of Colorado early today, seeking any link between two deadly shooting sprees at Christian religious centres that left both communities baffled and stunned.