BATON ROUGE - New court documents filed ahead of the trial for one of two men accused of kidnapping and murdering an elderly couple reveals new details surrounding the disturbing case. 

Denis and Suzanne Duplantier were beaten, bound and taken from their home on Highland Road in 2015. Their bodies were later found inside their abandoned vehicle at a Hammond truck stop. Family members had contacted law enforcement after not hearing from the couple for some time.

Investigators believe Ernesto Alonso, a handyman who lived on the Duplantier's property, carried out the grisly murders with the help of  Frank Garcia and stole money from the couple's safe. Alonso was found days later at Garcia's Florida home, where detectives also found items stolen from the Duplantier home.

New documents were filed this week revealing new details ahead of the start of Garcia's trial next week.

Those filings reveal that local police in Hollywood, Florida found some of the Duplantiers' jewelry on the front patio of Garcia's home when they first arrived. The Duplantiers' daughter also revealed to investigators that her father previously hid cocaine in his house, though it's unclear how much was kept in the residence. It was also said that officers use a cell ping and historical phone data to track Garcia.

In July, police turned over even more evidence to prosecutors over five years after the killings. Among that evidence is neighborhood security video, more than 20 pages of detective case notes, a smart phone belonging to Alonso, and video of Garcia and his wife in Florida. 

DA Hillar Moore said language barriers, changing venues and the resignation of one of the defense attorneys has dragged out the process of having the case prosecuted.

Garcia's trial is set to begin Sept. 27. Alonso will be tried separately later.

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The hotline for applying for Disaster SNAP benefits has been plagued by long waits and hang-ups since it launched earlier this week as thousands of storm victims spread across 25 parishes began calling in. The state has designated certain day for victims based on their parishes and the first letter of their names.

The state will be accepting calls from residents in East Baton Rouge, East Feliciana, Iberia, Orleans, Pointe Coupee, St. Bernard, St. Tammany, Washington, West Baton Rouge, and West Feliciana parishes on Friday and Saturday. The line will stay open from 6:30 a.m. to 7:30 p.m.

Click here to find out when and how to call

"DCFS staff served more than 41,000 applicants during the first three days of the Hurricane Ida DSNAP operation which started on Monday. Residents from the Phase 1 parishes were directed to call according to an alphabet schedule based on their last name," the department said in a statement Thursday. "However, during the first two days of the DSNAP application period, an overwhelming number of calls bogged down phone lines leading to dropped calls or long wait times. At times, the DSNAP line received as many as 350 calls per second."

The Department of Children and Family Services said its staff had served more than 41,000 applicants since phone lines opened Monday.