Antoine Massey and Derrick Groves are shown in these undated booking photos released by the Louisiana State Police. Louisiana State Police

The reward for the arrest of the two remaining inmates who broke out of a New Orleans jail this month has more than doubled to $50,000, authorities announced on Thursday, as police said they believe they are closing in on the "dangerous" fugitives.

Antoine Massey and Derrick Groves are among 10 inmates who escaped from the Orleans Justice Center on May 16, according to Louisiana State Police.

In the nearly two weeks since, eight of the inmates have been captured, but Massey and Groves remain on the run, police said.

There are now rewards totalling $50,000 per inmate for tips leading to their arrest, according to Louisiana State Police Superint

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