Nick Francona, the son of Indians manager Terry Francona, has accused the Dodgers of discrimination, alleging they unjustly fired him last year after he sought help from an organization that treats veterans for so-called “invisible wounds of war.”

According to multiple reports, Francona, a Marine Corps veteran of the war in Afghanistan, complained in a letter to Major League Baseball that the Dodgers terminated his contract as assistant director of player development over an assessment he received at Home Base, a Boston-area organization.

Francona, 31, has twice turned away settlement offers from the Dodgers since his firing in March 2016 – for $40,000 and $150,000 – and an MLB investigation is reportedly ongoing and expected to be completed within a week.

“While I don’t expect that speaking out on these issues will be universally popular within baseball circles, these issues are far too important to remain silent,”

Francona told Yahoo! Sports. “I am grateful that my family and friends urged me to stand up for the principles at stake, rather than accept an offer of money in exchange for my silence. I believe strongly that the people involved need to be held accountable for their actions.”