Former San Francisco Giants and Minnesota Twins reliever Sam Dyson is being investigated by the MLB under the joint Domestic Violence Policy, according to Ken Rosenthal and Katie Strang of The Athletic.

The investigation stems from a series of Instagram posts by Dyson’s ex-girlfriend:

Major League Baseball is investigating free agent reliever Sam Dyson for domestic violence, sources tell The Athletic.

Dyson’s ex-girlfriend, Alexis Blackburn, authored two lengthy Instagram posts this week alluding to domestic violence by an unnamed individual, one on her personal account, another on an account she authors in the voice of her cat, Snuckles. A source confirmed to The Athletic that she was writing about Dyson.

On her own account, Blackburn referred to being bullied, writing: “I am broken . . . I’ve allowed my physical health, my emotional health and my mental health to diminish to nothing. I’ve allowed more things to happen than I want to admit. I don’t know who this girl is right now because this hasn’t been me. I haven’t been me in so long. I’ve allowed myself to use the word ‘sorry’ in every conversation whether I did something wrong or not.”

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This is the third consecutive season in which the league has had to investigate claims made on social media. Previous cases–which included catcher Derek Norris and Cubs infielder Addison Russell–both resulted in lengthy suspensions and severe public backlash.

The MLB has also had to suspend the likes of Aroldis Chapman and Roberto Osuna for violating the policy, and the recent firing of former Houston Astros assistant GM Brandon Taubman highlights just how intrinsic the problem of domestic violence has become in the sport.

Dyson spent the majority of the 2019 season with the Giants before he was traded to the Twins at the deadline. He will likely miss all of the 2020 season after undergoing shoulder surgery.