Pregnant nurse, 23, and her two-year-old son are shot dead by her husband before he turns gun on himself in murder-suicide
Police found Paiden Nicole Priest and her son, Grayson Alexander Beckham, dead in their house in Van Buren, near Fort Smith, Arkansas, on Sunday
Paiden s husband, David Wayne Priest, also suffered from a gunshot wound, but was still alive when police arrived
He later succumbed to his wounds at a local hospital
Police believe David killed Paiden and Grayson in a murder-suicide, following a verbal dispute
Paiden was in her third trimester of pregnancy, and had recently celebrated her baby shower for her unborn son, Elijah