corroborate

The BBC has independently corroborated the account with a number of sources.

He admitted the amount of information he could share was limited, but that he had also "spoken with eyewitnesses and been able to corroborate those reports and establish that they are based in fact".

That’s corroborated in emails from the South Plains Public Health District, which oversees Gaines County, the area hit hardest by measles.

The UN says the majority killed were shot by Israeli troops, something corroborated by eye-witnesses we have spoken to and medics in Gaza.

HRW said the total killings in July may exceed 300, corroborating similar findings by the UN earlier this month.