McAllen police continue to investigate a drug incident at a downtown McAllen bar that led to four people being hospitalized, and to the death of one of the patients.

At around 1 a.m. Saturday, officers responded to a call from the Old Beer House on 17th Street where four men had been using drugs in the bar’s restroom. All four had a negative reaction and were rushed to the hospital, where one of the men died.

The conditions of the other three are not known. The type of drug has not been disclosed. Police are working to determine the source of the drug.