Former President Donald Trump’s youngest son, Barron Trump, has declined to serve as a delegate at this summer’s Republican National Convention, according to a senior Trump campaign adviser and a statement from Melania Trump’s office.

“While Barron is honored to have been chosen as a delegate by the Florida Republican Party, he regretfully declines due to prior commitments,” the statement from the former first lady’s office said.

Barron Trump, who turned 18 in March, had been selected by the Florida GOP to serve as an at-large delegate at the July convention. Several other Trump family members – including Donald Trump Jr., Eric Trump and Tiffany Trump – were also selected as delegates.