NEWYou can now listen to Fox News articles!. Prosecutors pressed the Hawaii doctor accused of trying to kill his wife during a tense cross-examination Thursday, challenging his account of a violent confrontation on an Oahu hiking trail.. Gerhardt Konig, who testified the day before that his wife attacked him first, faced pointed questions about his actions, his state of mind and his behavior in the months leading up to the incident.. During questioning at his trial, Konig acknowledged he went into what he described as “detective mode,” saying it began even before he accessed WhatsApp messages. He admitted to tracking his wife’s activity and reviewing her communications.. He testified that WhatsApp was the most frequently used app and confirmed he also looked through her emails, saying he had her consent.. DOCTOR’S BLOODIED WIFE SEEN IN BODYCAM AFTER SCREAMING FOR HELP FROM HUSBAND’S ALLEGED ATTACK. Konig acknowledged that while the messages did not contain explicit sexual content, he was upset by the extent of the relationship.. “I was upset,” he told jurors, explaining his reaction was not about a single message, but the overall nature of the communication.. Prosecutors also pressed him on his language, and Konig acknowledged calling his wife derogatory names, though he said that did not happen during the initial disclosure.. HAWAII DOCTOR’S EX-BOSS SAYS ANESTHESIOLOGISTS HAVE MEANS TO KILL AS WIFE TESTIFIES ABOUT SYRINGE ATTACK. He testified that he wanted his wife to leave her job and strongly preferred she have no further contact with the coworker she was allegedly having an affair with.. Outside the presence of the jury, attorneys clashed over the scope of questioning allowed during cross-examination.. The state argued the defense had opened the door to questions about sexual coercion, including whether Konig demanded sex or threatened to disclose private information.. The judge ruled prosecutors could question Konig about sexual demands, but could not characterize them as coercion.. FOLLOW THE FOX TRUE CRIME TEAM ON X. The court also allowed limited questioning about what was described as “digital spying,” including allegations Konig accessed his wife’s accounts, used an iPad to monitor her communications, and mirrored her phone to view emails and messages.. The cross-examination followed Konig’s dramatic testimony Wednesday, in which he claimed his wife attacked him first during a violent struggle on the trail.. SIGN UP TO GET TRUE CRIME NEWSLETTER. He told jurors the confrontation escalated after an argument over her alleged affair.. Konig testified his wife shoved him, grabbed him, and struck him with a rock. He admitted striking her twice, saying he acted on instinct to protect himself.. SEND US A TIP HERE. He also became emotional on the stand, telling jurors he felt “horrified” and “hopeless” after the incident.. Konig’s testimony came after two days of emotional testimony from family members, including his own son.. LIS