It's been a year in the making.<br /> <br />But on Monday, the biggest U.S. detention facility in Afghanistan was formally transferred to Afghan control.<br /> <br />Parwan Detention Center, or Bagram prison, houses over 3,000 inmates, including insurgents considered dangerous to international forces here.<br /> <br />The prison vexed relations between the two countries.<br /> <br />Detainees are often held for years without trial, and human rights activists say they will be vulnerable to more rights abuses after the handover.<br /> <br />Lal Mohammad was jailed over 17 months before he was found innocent and released.<br /> <br />(SOUNDBITE) (Pashto) LAL MOHAMMAD, WHO WAS HELD AT BAGRAM DETENTION CENTRE FOR 17 MONTHS, SAYING:<br /> <br />"I was beaten by Afghan and foreign soldiers in the prison. There was torture. We were locked in a toilet for days and nights. I was taking ablution inside that toilet where I was sleeping. Is a toilet a place for keeping humans and Muslims that they had to keep us there?"<br /> <br />The handover