Sylvester Stallone was welcomed with a raid from Australian Customs officers upon his arrival.

The actor arrived in Australia on his jet Friday night to promote his movie “Rocky Balboa.” There was a problem though when prohibited items were discovered in Stallone's possession, through routine x-rays of luggage.

The Daily Telegraph Online reports that on Monday Stallone and members of his group were seen throwing things from a hotel window. Australian customs raided the Rocky star’s room at Hyatt Hotel. A summons was also issued to require Stallone to answer charges on prohibited substances, according to AAP.

It is not clear yet what the whole fuss really was about. Customs and hotel management have refused to comment or give any details about the seized items.

Stallone himself simply said: “To (customs) it's major, but it's really minor stuff. I just made a mistake,” as quoted by the Daily Telegraph.

On Monday night the 60-year-old actor left for Thailand, where he will begin filming the fourth film in his Rambo series, “Pearl of the Cobra,” the Sydney Morning Herald reported.