Controversial vaccine researchers who have been praised by Robert F Kennedy Jr, the US Department of Health and Human Services (HHS) secretary, had their offices in Guinea-Bissau raided by judicial police, who seized doses of hepatitis B vaccines, officials said on Facebook.

The researchers have been at the heart of an ongoing dispute over research on African newborns, supported by $1.6m from the US Centers for Disease Control and Prevention (CDC) and matched by the Pershing Square Foundation and the Bluebell Foundation for a total of $3.2m.

The police search took place on Monday, involving “investigative procedures aimed at clarifying the circumstances related to the said batch of vaccines”, according to the social media post, which was translated from Portuguese.…