Authorities said Thursday that they have shut down a direct pipeline into the city by one of Mexico’s most dangerous drug cartels with the arrest of five people. The arrests were the result of five months’ work, which included wiretaps conducted by the Dangerous Drug Offender’s Unit of the city District Attorney’s Office, the Drug Enforcement Administration in Philadelphia and El Paso, Texas, as well as the FBI. Authorities arrested three people in the Northeast on Sept. 8, including the alleged distributor for the Sinaloa Cartel, which operates in the Mexican provinces of Sinaloa and Juarez. Two more people were...