A Norwegian Cruise Line ship docked in California on Sunday after approximately 19 people aboard grew ill officials said.

The patients aboard the Joy cruise ship reported an "unspecified illness," according to the Los Angeles Fire Department. The ship docked at the Port of Los Angeles in San Pedro.

NOROVIRUS OUTBREAK REPORTEDLY HITS NORWEGIAN CRUISE LINE SHIP, SICKENING MANY PASSENGERS

The fire department said in an alert the report came in just after 5 a.m. local time and that fire officials had "resources on standby to evaluate approximately."

In an update, fire officials said in total, 19 patients were treated for flu-like symptoms and all declined to be transported to the hospital. The department initially said a total of 20 passengers reported an "unspecified illness."

Last Sunday, the Norwegian Joy cruise ship was again docked at the port around 6 a.m. and six passengers were treated for flu-like symptoms.

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The cruise ship, according to Norwegian's website, was built in 2017 and can host 3,804 guests and a crew of 1,821, and hosts cruises year-round.