At trailer homes in suburban Lake Worth and in Martin County, Miguel Angel Alvarez Maradiaga oversaw the family business — brothels and prostitution houses, authorities said.

With various men working under his command, Maradiaga sold the sexual services of women brought to South Florida from the Dominican Republic, Colombia, Costa Rica, Puerto Rico and other countries from Central and South America, the Palm Beach County Sheriff’s Office said.

With the help of Martin County authorities, at least four men were arrested in one of the area’s most extensive investigations to date into human trafficking, which some have called modern-day slavery.

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Authorities say Maradiaga, 31, has been running the prostitution business since taking it over about four years ago when his brother was deported to their native Honduras on prostitution-related charges. He has been in custody at the Martin County Jail since May 6, when deputies arrested him on charges of deriving support from prostitution, maintaining a house of prostitution and offering another for prostitution.

Martin County investigators also arrested Walter Godoy, 42, on similar charges May 5.

On Friday, Palm Beach County investigators charged two Palm Springs men whom they say worked for Maradiaga with human trafficking and other charges. Investigators say Byron Estrada, 28, oversaw one of the brothels and occasionally provided security Joel Gomez-Chilel, 36, provided security and collected money from various men who sought sexual services at brothels in suburban Lake Worth, according to a Palm Beach County Sheriff’s Office arrest report made public Tuesday.

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Estrada and Gomez-Chilel are at the least the ninth and 10th men in Palm Beach County this year to be charged with human trafficking. Authorities say human trafficking involves the use of force, fraud or coercion to control another person for the purpose of engaging in commercial sex acts, labor or other services.

It was not clear late Tuesday whether Maradiaga would face charges in Palm Beach County or be charged with human trafficking.

Investigators say multiple women were sold into prostitution — to more than 100 men a week — at homes on Davis Road in suburban Lake Worth, Urqurhart Street in Lake Worth and Southwest 169th Avenue in Indiantown. A confidential source also told investigators of prostitution activity at residences at 10th Avenue North and Congress Avenue, at Lake Worth Road and Military Trail and at an address along Indiantown Road in the Jupiter area, according to the affidavit.

Authorities allege that Maradiaga distributed business cards to men in Hispanic communities advertising clothing for men of all sizes. The reverse side of the card included the address of at least one of the brothels, the sheriff’s office said.

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One woman told investigators that women would be flown into Fort Lauderdale from Puerto Rico and picked up at a train station in Lake Worth, under the Interstate 95 overpass. The report does not specify the ages of the women, or say whether any were juveniles.

One woman said she was forced to work at brothels ran by Maradiaga and his family until she became pregnant. Maradiaga refused to allow the woman to receive medical care and forced her to work as a "house mom," collecting money and forcing other women to keep working.

Another woman told investigators the houses typically had one or two women available at a time, with men paying for 15-minute sessions.