The search for a missing NSU student resumed Monday.
The family of Steven Adams says sonar teams will continue to scan Lake Tenkiller for his body. His father says it is the same teams that helped search for Natalee Holloway in Aruba.
Carl Adams has threatened to call off the search for his son. But he says after two years, his family deserves answers. "They're not going to do anything to me that's going to hurt me any worse than I am already. I'm a 50 year old man with a broken heart that's not ever going to mend."
Adams says they're still looking for a person of interest who was sitting outside Steven's apartment the day he disappeared.