Testimony in the trial for a Coaldale man accused of murdering a Marine concluded Tuesday.

In the second day of the trial of 18-year-old Stanley Kralik, the defendant took the stand Tuesday afternoon, maintaining his innocence.

In the morning, an alleged co-conspirator, Oliver Trizarri described how he and Kralik allegedly murdered 24-year-old Corey Samuels in January 2014.

Meanwhile, Kralik's attorney cast doubt on what police have described as the murder weapon - a shovel found in his home in Coaldale.

Kralik, now 18, is facing first degree homicide charges. Police say that on the night of January 20, 2014, he and 22-year-old Oliver L. Trizarri of Reading murdered Samuels after luring him into a wooded area off Miner Street.

On Tuesday, jurors heard from Trizarri, who has already pleaded guilty in the case.

On the stand, Trizarri described how he and Kralik allegedly killed Samuels. He testified that he subdued Samuels using a chokehold, then he and Kralik took turns hitting him with a shovel until he stopped breathing.

During the investigation, troopers recovered a shovel from Kralik's house that they believe was the murder weapon. However Kralik's defense challenged that idea in court on Tuesday.

They pointed out that the weapon had no blood or DNA on it.

Jurors also heard from state trooper Melissa Kyper, who filed charges against both men.

On day one of the trial, two acquaintances of Kralik testified that he confessed the murder to them. A forensic anthropologist also described the traumatic head injuries that led to Samuels' death.

Closing arguments will be presented Wednesday morning and the jury will enter deliberation afterwards.