TULSA - Testimony continues Wednesday in the final trial related to what prosecutors say was a murder-for-hire.
Alonzo Johnson is the last suspect to face trial in the murder of Neal Sweeney. Two others have already been convicted and a third accepted a plea deal.
Prosecutors say Johnson provided the stolen vehicle used in Sweeney's 2008 homicide.
Prosecutors say gas station owner Mohammed Aziz wanted revenge on Sweeney, a prominent Tulsa businessman, for cutting off the gas to Aziz's stations for non-payment.
Aziz then hired Allen Shields, the self-confessed mastermind, who got his brother Fred Shields involved and eventually Johnson, who is their cousin.
Prosecutors say the Shields brothers hired Terrico Bethel, the convicted triggerman, to carry out the hit.
Sweeney's co-worker provided emotional testimony Wednesday morning as she described hearing two to three gunshots. She said Sweeney dealt with Aziz on a daily basis.
On the stand Tuesday, Sweeney's office manager told the jury she heard the gunshot that killed her boss.
Both Aziz and Allen Shields agreed to testify against the other suspects but Shields committed suicide in 2011 during a standoff with Tulsa police.
Bethel and Fred Shields have been sentenced to life in prison for first-degree murder and conspiracy to commit murder.
Aziz has not yet been sentenced.
Stay with KJRH.com and 2NEWS for continuing coverage of this case.