Lionel Bolland described the attack as "heartbreaking"
Vandals have caused more than £10,000 of damage to a Hillsborough memorial garden in Merseyside.
Memorial stones were thrown across the gardens in Port Sunlight village and decorative balustrades were kicked and smashed during the attack.
Chief executive of the village trust Lionel Bolland was called out after midnight on Sunday and saw the damage.
He said: "I was sickened by what they had done, it is despicable. What must go through their minds?"
The garden was dedicated to those who lost their lives in the Hillsborough disaster shortly after the tragedy 20 years ago.
Set up by Unilever, it was created to help many of their staff, who lost loved ones in the Leppings Lane crush, pay their respects.
The memorial garden was created by Unilever companies
Mr Bolland said: "It is the worst act of vandalism I have ever seen and to have ever taken place in our gardens.
"We have gardeners who lovingly tend to the memorial lawns on a regular basis - they give a lot of comfort to a lot of people.
"It is just heartbreaking and I cannot comprehend why anyone would do this.
"Whoever is responsible should take a look at themselves in the mirror and think about what they have done. It is sick."
A police spokesman confirmed that the incident was under investigation.
The 20th anniversary of the Hillsborough disaster was marked on 15 April this year with 25,000 people attending a memorial service to remember the 96 Liverpool fans who died during the club's FA Cup semi-final at the Sheffield Wednesday ground.
The garden is situated in Port Sunlight, a village created in the 19th Century by William Lever for the workers of his nearby soap factory.