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Police in Hungary say the captain of a river cruise ship involved in a deadly collision with a tour boat was not intoxicated at the time of the May 29 crash in Budapest.

A spokesman for Budapest Police said Tuesday that tests showed that the 64-year old Ukrainian captain of the Viking Sigyn was not under the influence of alcohol or drugs.

The cruise ship collided with a smaller sightseeing boat, killing 23 of the 33 South Koreans onboard as well as the two-man Hungarian crew. Seven survived and three are still missing.

The cruise ship's captain, the only suspect in the collision so far, was released on bail last week.

The capsized Hableany (Mermaid) tour boat was lifted out of the Danube last week by a huge floating crane.