MOSCOW, July 29 (RIA Novosti) - Russian investigators have detained a suspect in the attempted murder of Isa Yamadayev, whose two brothers were gunned down in Moscow and Dubai over a seven-month period, an investigative committee spokesman said.

Isa's brother Ruslan, a member of Russia's State Duma (lower house of parliament), was gunned down in Moscow in September 2008, while Sulim, the former commander of Russia's Vostok battalion in Chechnya, was allegedly shot in the underground car park of his apartment in late March in the United Arab Emirates.

"An individual suspected of the crime has been detained," Vladimir Markin said.

The attack on Isa Yamadayev occurred on Tuesday evening outside of Moscow.

In an interview earlier on Wednesday, Isa Yamadayev said an attempt on his life had been made. However, at that time Russian authorities had not confirmed whether a crime had been committed.

"An attempt on my life was made," Isa, who along with relatives still maintains that Sulim survived the shooting and is recovering in hospital, told Ekho Moskvy.

During the interview, Isa once again confirmed that Sulim was alive and "feeling fine."

"This is another link in the chain: an attempt on my brother Sulim's life and the murder of my older brother Ruslan," Isa said, but refused to say anymore, citing the ongoing investigation.

In June, Russia's special envoy on international cooperation in the fight against terrorism and transnational organized crime, Anatoly Safonov, said they had not received official legal confirmation of Sulim Yamadayev's death.