WOBURN, MASS. >> A Burlington man convicted of killing a suspected drug dealer in 1978 has had his bid for a new trial denied.

A Superior Court judge recently rejected James Rodwell's seventh retrial bid after a 16-day hearing involving 29 witnesses and 148 pieces of evidence.

Rodwell was convicted of shooting Louis Rose Jr. multiple times in the head in Somerville during a drug robbery.

The Sun of Lowell reports that his attorneys argued in their appeal that the prosecution's key witness made a deal to testify about Rodwell's alleged jailhouse confession in exchange for a lesser sentence. The defense also argued that police covered up the disappearance of portions of Rodwell's case file.

The judge in his decision rejected those arguments.

Rodwell's lawyer suggested she will appeal.

Information from: The (Lowell, Mass.) Sun, http://www.lowellsun.com