A federal judge in Del Rio sentenced a man this week behind a human smuggling operation headquartered in San Antonio.

The Department of Homeland Security said Friday that its Homeland Security Investigations agents arrested two people in connection with a Venezuelan transnational gang.

A Del Rio man was sentenced to eight years in federal prison for possession of child pornography.

A Dallas man was sentenced to seven years in prison this week for his alleged involvement in transporting migrants through San Antonio and throughout the state.

Two law enforcement officials have told The Associated Press that two properties belonging to music mogul Sean “Diddy” Combs in Los Angeles and Miami were searched by federal Homeland Security Investigations agents and other law enforcement as part of an ongoing sex trafficking investigation.

Homeland Security Investigations special agents arrested Progreso Mayor Gerardo Alanis, 31, on federal drug trafficking charges Monday, according to an indictment.

Eighteen migrants were found inside a tractor-trailer Tuesday night on the city’s South Side, according to Homeland Security Investigations.

A man was arrested after a dozen migrants were found in a train car east of Knippa on Friday, according to a criminal complaint from Homeland Security Investigations that revealed new details in the smuggling operation that left two men dead.

Homeland Security Investigations' mission is to dismantle organizations responsible for cases like those seen this past weekend, where migrants were found trapped inside rail cars, resulting in injuries and several deaths.

“It’s sad to see that so many undocumented immigrants were found in this condition, and two of them lost their lives. It’s heartbreaking,” Rodriguez said.

Here’s what we know about how the suspects were discovered and the charges they could be facing.

Authorities have announced the discovery of a major drug smuggling tunnel — running about the length of a six football fields — from Mexico to a warehouse in an industrial area in the U.S. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of border walls.

In a story published Dec. 21 about the use of body cameras by an investigative unit of the Department of Homeland Security, The Associated Press erroneously reported that agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives in Phoenix and Detroit were the first federal officers to wear body cams.

It was looted from an Iraqi museum 30 years ago, Now, a 3,500-year-old clay tablet discovered in the ruins of the library of an ancient Middle Eastern king is finally headed back to Iraq.

A Dallas man was arrested in San Antonio and is facing a federal charge in connection with a smuggling operation on the far East Side, according to Homeland Security Investigations.

Homeland Security Investigations responded to a call from San Antonio after police say 80 to 100 people escaped from the back of an 18-wheeler when an officer arrived to investigate the suspicious big rig at a far East Side truck stop.

Homeland Security investigators are working with Pfizer, Moderna and dozens of other drug companies racing to complete and distribute the vaccine and treatments for the virus. “We're all very excited about the potential vaccine and treatments,” said Steve Francis, assistant director for global trade investigations with Homeland Security Investigations. Homeland Security Investigations started using its 7,000 agents in tandem with border, FDA and FBI officials to investigate scams, seize phony products and arrest hundreds of people. Homeland Security Investigations made more than 1,600 seizures of products worth more than $27 million and made more than 185 arrests. Meanwhile, Homeland Security investigators and others are trying to send the message now to the public before the vaccines are approved and begin distribution.

CIBOLO, Texas – A federal grand jury has charged a Cibolo businessman with wire fraud in a scheme involving online firearm sales, officials said. William Badberg, 44, who owns Bullit Proof Arms in Schertz, is charged with 12 counts of wire fraud. A federal indictment says Badberg advertised the sale of firearms on the internet, including on a website he controlled, but failed to deliver the weapons to the buyers despite being paid for the items. Homeland Security Investigations agents arrested Badberg on Monday at his home. If convicted, Badberg faces a maximum possible term of 20 years in federal prison for each count of wire fraud.

CIBOLO, Texas – Homeland Security Investigations officials say a man is behind bars following two raids on Monday. The raids were conducted at a gun shop on I-35 and FM 3009 and at a home on Penick Way in Cibolo. HSI says the investigation is in connection with wire fraud and firearms. KSAT is working to gather more details and will provide updates as new information becomes available.

(CNN) -- A tip from an anonymous caller led police in Laredo, Texas, to a surprising discovery: 36 migrants trapped in a hidden compartment inside a dump truck that appeared to be hauling gravel. Later that morning, they received a call reporting that people were concealed in a compartment inside the vehicle. Investigators found that plywood sheets had been installed inside the truck, creating the hidden compartment. The migrants who'd been trapped in the truck are now in the custody of federal immigration authorities, police said. In the past, CBP has released reports of large groups of migrants trapped inside trucks and warned that smugglers are placing migrants' lives in danger.

Homeland Security Investigations is trying to fight the opioid crisis by providing virtual currency training to law enforcement departments around the nation. HSI said that drug dealers are taking advantage of the dark web and digital currency, like Bitcoin, to sell opioids and other narcotics anonymously. The HSI training teaches law enforcement departments to know what to look for when investigating narcotics trafficking on the dark web. San Antonio departments will be taking part in the training in the near future. To read the full story, click here.

AUSTIN – Texas Observer reporter Jason Buch has obtained a letter signed by 19 special agents in charge of Homeland Security Investigations, or HSI, asking Sec. Kirstjen Nielsen to split off HSI to avoid confusion with Enforcement and Removal Operations, or ERO. The letter describes the perception that HSI has the same mission as ERO, which oversees rounding up undocumented immigrants for deportation. HSI is the criminal investigations arm of ICE. Read the letter by clicking here.