He corroborated the statement of his brother.

Condemned : sentenced to a particular punishment, especially death.
Confirmed : (of a person) firmly established in a particular habit, belief, or way of life and unlikely to change their ways.
Lend : grant to (someone) the use of (something) on the understanding that it will be returned.
Disapproved : have or express an unfavourable opinion.
Corroborated : confirm or give support to (a statement, theory, or finding).

Synonym of Corroborated is Confirmed