A note to our readers: The Times has lifted its paywall on stories about the Las Vegas shooting

The nation awakened Monday morning to learn that a gunman opened fire at an outdoor country music festival Sunday night on the Las Vegas Strip, killing 58 people and injuring nearly 500 -- the deadliest mass shooting in modern American history.

The Los Angeles Times has lifted its online paywall for stories about the shooting to provide the broadest possible access to information.

Here is The Times’ developing coverage from today:

Mandalay Bay gunman spent two weeks in Las Vegas before killings; researched outdoor concerts in other large cities

Republicans and NRA shift ground, say they will consider limiting firearm ‘bump stocks’

For second time in two years, the same message from his fiancee — ‘Active shooter.’ And so began a night of hell in Vegas