(CNN) Kenyan journalist Soni Methu, the former host of CNN's "Inside Africa," has died at the age of 34.

She collapsed suddenly on Thursday in Kenya and died en route to the hospital, her sister, Faith Methu, said in a statement.

The cause of death remains unknown at this time.

"We don't know much but a post mortem will be done to tell exactly what happened," Faith Methu said.

Soni Methu hosted "Inside Africa," CNN International's longest-running feature program, from 2014 until 2015 when the show moved to a new format without a presenter.

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