(AP) — A 29-year-old Lincoln man has been given 20 to 42 years in prison for robbery and trying to persuade his girlfriend not to testify against him.

Online court records say Dustin Langenberg was sentenced Wednesday in Lancaster County District Court. He’d been convicted on one robbery count and two of witness tampering.

Authorities say Langenberg and two other men attacked a 33-year-old Lincoln man at his home on Nov. 4, 2011. Authorities also say Langenberg tried to persuade his girlfriend not to testify against him regarding what he’d said before and after the robbery.