ESPN reported Monday that a playful kiss to the head of a teammate led to the release of defensive tackle Christian Wilkins last week by the Las Vegas Raiders.

Christian Wilkins, who was released by the Las Vegas Raiders on Thursday, kissed a fellow player on the head and the teammate took offense to it, a source told ESPN's Adam Schefter.

"When you speak to people there inside the locker room, they say that Christian playfully went to kiss a teammate on top of his head," Schefter said on the Pat McAfee Show on Monday.