Sheriff sees no 'war on cops;' district attorney vows prosecution in 2 wounded officer cases

In this Sept. 6, 2015, photo, investigators stand by a Las Vegas Metro Police patrol vehicle after an officer in the vehicle was shot in Las Vegas. A man with a handgun walked up to the SUV as it was waiting at a red light and opened fire, striking one officer in the hand, authorities said. (Steve Marcus/Las Vegas Sun via AP) LAS VEGAS REVIEW-JOURNAL OUT; MANDATORY CREDIT (The Associated Press)

Shootings have wounded four Las Vegas police officers in the last two months, but the Clark County sheriff said Wednesday he doesn't believe there's a war on cops.

Sheriff Joe Lombardo did tell reporters Wednesday that he's concerned about copycats committing crimes to seek attention and headlines.

Lombardo says accountability is key, and Clark County District Attorney Steve Wolfson promised aggressive prosecution of the accused shooters who wounded officers on Friday and Sunday.

Two men were arraigned Wednesday on charges that could get them decades in prison in the wounding Friday of Officer Jeremy Robertson. He was shot in the leg.

Wolfson says a 17-year-old arrested Sunday in the wounding of Officer Thomas Clevenger will be tried as an adult on attempted murder with use of a deadly weapon charges.