Russian security forces on Wednesday detained a suspect accused of involvement in an alleged plan to attack a second school if the Beslan raid had been foiled, the prosecutor's office for southern Russia said. The detainee, identified as Israpil Khaikharoyev, had long been on a wanted list, said Sergei Propokov, a spokesman for the prosecutor's office. Khaikharoyev was detained in the southern region of Ingushetia.Authorities last year arrested what they said were four of 11 people allegedly meant to carry out the attack. A southern Russian court last week acquitted the four men of involvement in the alleged Beslan backup plan but convicted them on other charges and sentenced them to 17 years in prison, reports AP.