The King has visited the Manchester synagogue where two people died in a terror attack on the holiest day in the Jewish calendar.
Charles met with members of the community to show his support following the deadly attack earlier this month.
It is his first official appearance since Prince Andrew's decision to relinquish his titles amid growing pressure over his ties to sex offender Jeffrey Epstein.
The move has left the monarch's brother under intense public scrutiny.
Andrew has attempted to draw a line after years of controversy, following allegations he sexually abused Virgina Guiffre, by giving up his dukedom and other honours on Friday ahead of the publication of Ms Guiffre's posthumous memoirs.
The prince vehemently denies the allegations.
Andrew also faces the prospect of the Metropolitan Police looking into newspaper claims he passed Ms Giuffre's date of birth and social security number to his taxpayer-funded bodyguard in 2011 and asked him to investigate.
Charles was greeted by Rabbi Daniel Walker when he arrived at the Heaton Park Hebrew Congregation Synagogue, just a few metres from where Jihad Al-Shamie launched his terror attack outside the place of worship on October 2.
Adrian Daulby, 53, leapt from his seat to block the doors of the Jewish holy place as knife-wielding Al-Shamie, 35, tried to get in to attack worshippers.
Melvin Cravitz, 66, was killed along with Mr Daulby, as the attack unfolded on Yom Kippur, the most holy day in the Jewish calendar, with many worshippers inside the synagogue in Crumpsall, north Manchester.
Mr Daulby is believed to have been inadvertently shot dead by armed police as they scrambled to the scene to stop Al-Shamie, who had driven his car at worshippers outside, attacked others with a knife and tried to storm the synagogue, wearing a fake suicide belt.
The King spent a few minutes at an outside memorial area next to the synagogue, where flowers and messages have been left by those paying their respects.
