Alex O'Loughlin and girlfriend Malia Jones expecting a baby

HONOLULU (HawaiiNewsNow) - Baby news on the Hawaii Five-0 set. Alex O'Loughlin and Hawaii surfer/model Malia Jones are expecting their first child together.

O'Loughlin is currently filming season three of the CBS series. Each have children from previous relationships — O'Loughlin is father to 15-year-old son, while Jones is mother to 3-year-old son.

CBS on Monday announced that Hawaii Five-0 will kick off its third season with a "Sunset on the Beach" premiere screening.

The event is scheduled for Sunday, Sept. 23. Hawaii News Now will broadcast live from the event.

The new season of Hawaii Five-0 premieres on Monday, Sept. 24 on CBS.

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