Whitney Houston has died at age 48, her publicist confirmed to the Associated Press on Saturday, February 10.

Publicist Kristen Foster said that the singer had died, but the cause and the location of her death were unclear.

Houston won six Grammy Awards, 30 Billboard Music Awards, 22 American Music Awards and two Emmy Awards during her long career. She was one of the world’s best-selling musicians, having sold over 170 million albums and singles worldwide.

The singer, who has struggled with drug and alcohol abuse for years, relapsed and returned to rehab in May.

“Whitney Houston is currently in an out-patient rehab program for drug and alcohol treatment,” the 48-year-old pop and R&B singer’s spokesperson told People magazine at the time. “Whitney voluntarily entered the program to support her long-standing recovery process.”

Houston, known for her songs in her 1992 film “The Bodyguard,” including her cover of “I Will Always Love You,” underwent treatment for substance abuse in 2004 and in 2005.

Several years earlier, she told ABC News’ Diane Sawyer in an interview that would spur a slew of online and late-night jokes: “Crack is cheap. We don’t do crack. Crack is whack.”

Houston told Sawyer that she has used alcohol, marijuana, cocaine and prescription drugs at different points during her career.

“I partied a lot,” she said. ” Trust me, I partied my tail off. You get to a point where you know the party’s over.”

In 2000, the singer was detained at a Hawaii airport after a security guard said some 15 grams of marijuana were found in her purse. The drug possession charge was later dismissed.

Houston leaves behind one child, Bobbi Kristina from her marriage to Bobby Brown. Houston and Brown were married from 1992 until 2007.