Gerhardt Konig, 46, and his wife were at Pali Lookout on Oahu on Monday morning when Konig tried to push her off the trail and struck her in the head with a rock, the Honolulu Police Department said.

Gerhardt Konig, a 46-year-old anesthesiologist from Maui, was on vacation on Oahu with his 36-year-old wife, nuclear engineer Arielle Konig, when he allegedly pushed her off a hiking trail in the ...