Rio Grande Valley/ Crime & Emergencies

San Juan H-E-B Drug Deal Shooting Leads to Capital Murder Indictments for Two

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Published on October 22, 2026
San Juan H-E-B Drug Deal Shooting Leads to Capital Murder Indictments for TwoSource: Google Street View

A drug deal in a San Juan H-E-B parking lot ended with 40-year-old Hervey Marin De Leon shot dead in the back seat of a car, and now two young men indicted on capital murder charges are awaiting arraignment. Juan Samuel Olguin and Michael Anthony Lopez, both 19, were indicted on October 8 in connection with De Leon's death, months after their initial arrests.

What Police Say Happened at the H-E-B

According to myrgv.com, De Leon went to the H-E-B with his brother to buy drugs from Lopez. A witness told police that Lopez entered the back seat of a white Chevrolet Malibu where De Leon was waiting and shot him several times; the outlet reports that Jorge De Leon, the victim's brother, said he saw Lopez shoot him in the backseat. De Leon was taken to a McAllen hospital, where he was pronounced dead, according to the seed report from ValleyCentral.com.

Olguin allegedly told investigators he drove Lopez to the H-E-B to collect $10,000, and that he heard gunshots and drove away after Lopez got back in the vehicle, per the same myrgv.com account. Police later recovered the handgun from a shed at Lopez's residence, the station notes, after he said he hid it there following the shooting. Olguin reportedly drove away from the scene in a black Dodge Charger with Lopez as a passenger, per ValleyCentral.com.

Charges Have Escalated Since July

Olguin and Lopez were initially arrested and charged with murder in July, one day after the shooting, before the case advanced to capital murder indictments reported this month. Olguin now also faces three possession charges, while Lopez faces an additional charge of aggravated assault with a deadly weapon, according to the same myrgv.com report. The two have remained in custody since their July 17 arrest, per Hidalgo County jail records cited by ValleyCentral.com.

Bond amounts for the pair have also shifted as the case has moved forward. An earlier report from myrgv.com indicated both men were given $1 million bonds at their initial arraignment, while the outlet's more recent coverage states that Olguin and Lopez remain in custody on bonds of $1,202,500 and $735,000, respectively.

Conflicting Details Remain Over Ages and Shooting Date

Some details of the case have varied across reports. ValleyCentral.com identified Olguin as 19 and Lopez as 18, while myrgv.com's more recent indictment coverage describes both men as 19. Reports have also differed on the date of the shooting itself — ValleyCentral.com and myrgv.com both cite July 16, while krgv.com reported the shooting occurred on July 10.

Arraignments Set for Late October

Lopez is scheduled to be arraigned on October 28 in the 476th District Court, according to myrgv.com. Olguin's arraignment, originally set for the 139th District Court, has been reset to October 26, per court clerk information reported by ValleyCentral.com. Both men remain in custody as their cases proceed through the Hidalgo County court system.