Restaurateur Harry Morton's Younger Brother Speaks Out Following His Death: 'I Lost My Best Friend'

Harry Morton’s family is mourning the loss of their loved one.

The restaurateur’s younger brother, Matthew Morton, has broken his silence about Harry’s death — which occurred over the weekend after he suffered a heart attack at age 38.

“On Saturday I lost my big brother,” he wrote on Instagram Wednesday. “Harry is that rare person who means so much to so many people in so many different ways, but to no one, could he be more meaningful than he has been to his little brother.”

“I lost my best friend in the entire world, my second father, I lost the person that taught me everything growing up, the person that looked out for me, guided me, showed me the way,” Matthew added. “Pretty much everything that’s good inside me comes from a lesson I learned along the way from Harry. He paved the way for me to become the person I am today. I could never have asked for a better teacher or a better friend.”

RELATED: Restauranteur Harry Morton Died from a Heart Attack and Had Coronary Artery Disease, Says Family

The co-founder of Cha Cha Matcha recalled the last words that he said to his brother, just hours before Harry reportedly suffered from sudden cardiac arrest.

“It’s really weird, I had dinner with him on Friday night, and spoke to him on the phone Saturday morning, the last thing I said to him was ‘love you frere’ and I am eternally grateful that I got to spend so much time with him,” he said.

Matthew went on to encourage his followers to reach out to their own siblings, as well as urge other men to check up on their heart health.

RELATED: Restaurateur Harry Morton’s Cause of Death Remains Mystery After Coroner Completes Autopsy

“If you’re lucky enough to have a brother or a sister, please give them a big squeeze, and tell them how much you love them,” he wrote. “My brother passed away from sudden cardiac death, if you’re a young man, I urge you to go and get a heart scan.”

“SCD is the single largest cause of natural death in the United States, it takes the lives of 325,000 people a year, and it is twice as common in men as it is in women,” he added, saying that the family planned to set up a foundation for heart disease in honor of Harry.

“I love you more than anything in the world frere,” Matthew concluded, sharing a series of photos of the brothers through the years.

A source previously told PEOPLE that Matthew was the one who found the business owner unresponsive in his Beverly Hills home on Saturday.

Harry had suffered from a coronary artery disease — which is a narrowing or blockage of the coronary arteries — and a “mildly enlarged heart,” his family spokesperson said in a statement to multiple outlets on Tuesday.

RELATED: Restaurateur Harry Morton, 38, Found Dead in Beverly Hills Home by Younger Brother

The family added in their statement that family friend and heart surgeon Dr. Kathy Magliato found that Morton “had calcification in three main arteries and suffered sudden cardiac death — an unexpected death caused by loss of heart function.”

The Los Angeles County Coroner’s Office previously told PEOPLE that though an autopsy was completed on Monday, Harry’s cause of death had officially been deferred pending additional investigation. They have still yet to confirm his official cause of death.

Harry was best known for founding the trendy Mexican restaurant chain, Pink Taco. The company — which has locations across the country, including in Los Angeles, Chicago, Boston, Las Vegas — issued a statement about Harry’s death shortly after the news broke.

“We are saddened by the passing of Harry Morton, the founder and former owner of Pink Taco. Harry was a visionary and restaurateur ahead of his time, and his contributions, both professionally to our brand and personally to those he worked with, were numerous,” the restaurant said in a statement. “Our thoughts and condolences are with his family and friends during this difficult time.”