A secretive meeting between Hollywood star Sean Penn and Joaquin "El Chapo" Guzman in a jungle hideout late last year helped Mexico's government catch the world's most wanted drug lord, sources said. Guzman, the infamous boss of the Sinaloa drug cartel, was arrested in north-west Mexico on Friday morning and sent back to the prison he broke out of in July through a 1.6km-long tunnel.Mexico aims to extradite Guzman to the US soon.Guzman was captured in the city of Los Mochis after a bloody action movie-like shootout. Mexican marines pursued the kingpin through storm drains before intercepting his getaway in a hijacked car.Penn's rare access to the capo was assisted by Mexican actress Kate del Castillo. They were driven to the hideout by Guzman's son, who the Hollywood star says was waved on by soldiers when they apparently recognised him.Penn said in an article written for Rolling Stone magazine at the weekend that he knew Mexican and US drug police were tracking him.Two Mexican officials said they monitored Penn's movements and this led them to a ranch where Guzman was staying. Mexican forces used helicopter gunships to attack the ranch during a siege that lasted days.Guzman narrowly escaped, with a minor leg injury, but was eventually cornered and arrested.Penn's encounter with Guzman came about after Guzman became interested in making a movie of his life after being inundated with requests from US movie studios following his 2014 capture, the film star said.The meeting was made possible because Guzman struck up an unlikely friendship with Del Castillo, who played a Mexican drug queen in a well-known TV soap.Mexican attorney-general Arely Gomez on Friday said the drug boss's yearning for the silver screen helped bring him down.One Mexican government source said authorities were considering whether to investigate Penn and Del Castillo, possibly for money-laundering. ..