Rio Martil

Antonius Rio Alex Bulo (2 May 1975 – 8 August 2008), known as Rio the Hammerhead (Indonesian: Rio Martil), was an Indonesian serial killer who killed at least four people with a hammer between 1997 and 2001, and then his cellmate in 2005. For his crimes, he was sentenced to death and subsequently executed by firing squad in 2008.

Biography Little is known of Bulo's background. It is known that he was born on 2 May 1975, in Sleman, and, according to several sources, was reportedly an unruly child who lashed because his parents preferred to pay more attention to their business than him. Due to his erratic behaviour, his parents sent him to Jakarta, where he would be raised by his brother, whom 12 years older than him. To their dismay, his behaviour worsened, especially after his father renounced him because Rio refused to convert to his religion.

As a result, Bulo began to hang out with thugs in the Senen area, skipping school, drinking alcohol and smoking marijuana. Aside from this, he also occasionally engaged in petty crimes with his friends. While growing up, he supported himself by selling fake vehicle documents, but after he got married, he switched to auto theft. Due to his proficiency in the trade, managing to crush three cars in three days in exchange for money, he became relatively wealthy. When queried by his wife as to where the money had come from, Bulo claimed that he earned it by selling clothes in Jakarta.

Between 1997 and 2001, Bulo is known to have killed at least 4 people, all of them car rental entrepreneurs.

On 12 January 2001, Rio entered the Rosenda Hotel in Purwokerto, where he subsequently killed businessman and lawyer Jeje Suraji in room 135 in order to steal his rented Toyota Kijang. On 2 May 2005, during one such session, Zulkarnaen remarked that Bulo didn't seem like the type of man to be on death row: in response, Bulo became enraged and started punching him before fatally banging his head against the wall.