Photo: Ben Solomon / ESPN Images

NBA commentator Mike Breen’s home in Long Island was completely destroyed in a massive fire over the weekend … and officials tell TMZ Sports the blaze is under investigation.

ESPN released a statement on the tragedy: “Mike is a cherished member of the ESPN family and he knows he has our full support through this excruciating circumstance.”

“We know the damage is devastating, and at the same time, we are grateful that he and his family are safe.”