DAVIE, Fla. -- Miami Dolphins head coach Joe Philbin confirmed that suspended guard Richie Incognito was investigated last year for allegedly molesting a female volunteer at the team's golf tournament.

"That incident occurred a year and a half ago," Philbin said Saturday. "We were made aware of the incident and we took immediate action."

Philbin declined to elaborate on what kind of actions were taken against Incognito. Philbin also did not reveal whether the NFL was alerted.

Incognito played all 16 games in 2012 and was eventually voted onto Miami's leadership counsel by his teammates in 2013.

No charges were filed against Incognito following the incident at the team's golf tournament, which took place in Aventura, Fla.

However, the police report states that the volunteer told police that Incognito "used his golf club to touch her by rubbing it up against her vagina, then up her stomach then to her chest. He then used the club to knock a pair of sunglasses off the top of her head."

The story was first reported Thursday by WPLG-ABC in Miami.

The woman, who is black, told several media outlets she has declined to talk because she had signed a confidentiality agreement.

The Dolphins suspended Incognito indefinitely last Sunday due to alleged harassment and misconduct toward teammate Jonathan Martin, who left the team due to emotional issues.

The story caused a national media firestorm, prompting the NFL to investigate the Dolphins, Incognito and Martin.