A man has been charged with murder after allegedly killing his wife on board a cruise ship because she laughed at him.

Kenneth Manzanares of Santa Clara, Utah, was charged after he was allegedly found with blood on his hands and clothes, and with blood spread throughout the cabin on the Princess Cruises ship Tuesday night, the FBI said.

Kristy Manzanares, 39, had a severe head wound, but authorities have declined to release other details in the case, reports au.news.yahoo.com.

FBI Special Agent Michael Watson also refused to say how many people were travelling with the couple on the 3400-passenger Emerald Princess that left Sunday from Seattle for Alaska.

Another man and other people entered the room before medical workers and security officers had arrived and saw the woman on the floor covered in blood, according to court documents.

The man asked Manzanares what happened, and the suspect said, ‘She would not stop laughing at me,’ the FBI document reads.

Manzanares then grabbed his wife’s body and tried to drag her to the balcony, but the man stopped him, Watson alleges.

The name of the man was not included in the complaint.

A ship security officer handcuffed Manzanares, who was held in a nearby cabin.

While the FBI searched him, Manzanares reportedly said, ‘My life is over.’

Manzanares, 39, appeared in court Thursday by teleconference from Juneau, Alaska, where he is in custody.

He appeared to be crying at times before the hearing and near the start, when US Magistrate Judge Kevin F McCoy began speaking.

McCoy appointed assistant Federal Defender Jamie McGrady to represent Manzanares. McGrady was not at the hearing and did not immediately respond to a request for comment.

Bail has not been set and a preliminary hearing has been scheduled for August 10.

Manzanares has no criminal history.

Kristy Manzanares was a trusted adviser and valued sales associate, her employer Summit Sotheby’s International Realty said in a statement.

‘Kristy was a dedicated and loving mother who juggled her business schedule to make her children the top priority,’ the statement reads.

The ship was diverted to Juneau because of the investigation, which the FBI is leading because the death occurred in US waters.

The ship docked Wednesday and passengers were kept on board for hours before it departed late that night for the town of Skagway.

Princess Cruises said passengers would receive $150 on-board credit because of the delay.

‘You feel sorry for the family, but a lot of people had to wait,’ said passenger Lloyd Barrows.