A Brazilian inmate, whose masked attempt to break out of jail dressed as his daughter reverberated around the world, was found dead in his cell, after apparently having hanged himself, Rio de Janeiro state authorities said on Tuesday.

Convicted Rio drug dealer Clauvino da Silva, 42, was serving a decades-long sentence for drug trafficking when he was caught trying to break out of jail last Saturday, disguised as his daughter. He was caught wearing an eerie plastic mask, a long black wig and women’s clothes, including a bra.

A video released by prison authorities in which he slowly removes his surreal disguise went viral, shining a light on Brazil’s long-standing struggle with its violent, overcrowded prison system, the world’s third largest.

On Tuesday, however, in a gruesome twist, Rio prison officials said da Silva had been found dead in his cell in a high-security unit in the Bangu prison complex.

“The inmate appears to have hanged himself with a bed sheet,” Rio’s prison authority said in a statement, adding that an investigation had been opened.

Frequent, deadly prison riots

The death of da Silva is an embarrassment for Rio’s prison authorities, which had initially cheered their actions in preventing his unusual escape plan. He is the latest prisoner to die in Brazil’s jails, which have become a major headache for new tough-on-crime President Jair Bolsonaro.

Last week, at least 57 people died after a prison riot broke out in the northern state of Para. More than 50 inmates died in similar circumstances in May during prison riots in the northern state of Amazonas.

Prison officials documented da Silva’s disguise after he was apprehended. (Rio De Janeiro State Secretary of Prison Administration/Reuters)

Brazil’s incarcerated population has surged eight-fold in three decades, to around 750,000 inmates. Prison gangs, originally formed to protect inmates and advocate for better conditions, have come to wield vast power that reaches far beyond prison walls.

The gangs are linked to bank heists, drug trafficking and gun-running, with jailed kingpins running their empires via smuggled cellphones.