A hearse overturned when the horses pulling it to a south London cemetery stampeded, dragging the carriage and coffin past appalled relatives and sending floral tributes flying.
"It was dreadful," a mourner told the South London Press. "The horses dragged the carriage to the cemetery on its side, tossing the coffin all over the place and destroying all the flowers inside.
"Some people got very angry and had to be restrained by other mourners... It is understandable given the circumstances. I'm horrified that something like this could happen."
Police were called to calm angry mourners so that the funeral last month could go ahead.
The carriage appeared to have clipped a mini-roundabout as it entered Lambeth Cemetery for the funeral, the local council which administers the graveyard said on Friday.