A Somalian father was not legally insane at the time he killed his 20-month-old son, a consultant psychiatrist at the Central Mental Hospital told a murder trial jury today.

A toddler died from extensive brain damage and multiple fractures to the skull consistent with "multiple severe impact to the head", a murder trial heard today.

A Somalian man denied murdering his 20-month-old son and told gardai the toddler fell twice on the night he was killed, the Central Criminal Court heard today.