New York City police detectives searched the Las Vegas studio apartment of the suspected gunman in Monday’s mass shooting at a Midtown Manhattan office tower and found what law enforcement sources described to ABC News as a suicide note he left for his parents.
The suspect, 27-year-old Shane Tamura, died by suicide after fatally shooting four people, including an off-duty NYPD officer and a security officer, when he burst into the high-rise at 345 Park Ave. around 6:30 p.m. on Monday wearing body armor and firing a high-powered AR-15-style rifle, authorities said.
Tamura drove more than 2,000 miles from his home in Las Vegas to New York City to carry out the attack, authorities allege…