IndyCar star on probation for tweet he says his sister sent

Helio Castroneves (file photo)

A tweet has landed three-time Indy winner Helio Castroneves in trouble.

After the Long Beach race on April 13, a tweet sent from his official account criticized race control for not penalizing drivers during the race. The tweet included an IndyCar official logo, with a thumbs down symbol Photoshopped in the center.

Castroneves say his sister sent the tweet from his account without his permission.

IndyCar put him on probation through the end of June for violating the series' social media policy.