Justin Bieber Was 'All Smiles' After Three-Hour Airport Questioning

Singer doesn't seem phased by Thursday night's customs grilling on the way back from his Japan trip.

It takes more than an hours-long grilling
 by customs officials to get Justin Bieber down. Despite being detained for nearly four hours after landing at Los Angeles International Airport on Thursday, Bieber seemed no worse for the wear when he finally emerged wearing a smile and his now signature brown fedora.

According to reports, Bieber finally left LAX around 6:20 p.m. PT surrounded by four bodyguards after his two black SUVs and a van had waited for him outside the Tom Bradley International Terminal for hours. He had reportedly been grilled by customs agents during a secondary search in which they asked about his various open criminal cases, including his DUI case in Miami.

His message for fans after the incident? "Life is good."

Bieber was flying in on an Air Singapore flight from Tokyo, where he had been on vacation with his mother, Pattie Mallette, according to E! Online.

Hours after the incident he posted a picture of himself with manager Scooter Braun that was tagged as "#teamsexy."

The detention came just days after Bieber apologized for posting a picture
 of his visit to the Yasukuni Shrine in Tokyo, which honors former Japanese military leaders who committed war atrocities during the Pacific War.

It's not the first time Bieber has had a rough landing during his travels
. He was also questioned at New Jersey's Teterboro Airport on his way to this year's Super Bowl after officials searched his private plane for drugs
, which they did not find.

After Braun said he was looking forward to Friday after a long Thursday, Justin ended his wild night by watching the Clippers NBA playoff game and urging Beliebers to keep it positive.