ID=72326872One day after raising the reward for information leading to the arrest of the person or people responsible for the I-10 shootings to $50,000, the Arizona Department of Public Safety held another media briefing to give an update on the case.

DPS spokesperson Bart Graves said there are no new freeway shooting incidents.

The I-10 shooting hotline has received over 1,000 calls; 550 of them are currently under investigation.

Three incidents of broken car windshields were reported in the last 24 hours, Graves said. All have been determined to be caused by debris.

In a Monday afternoon update, DPS Director Frank Milstead reiterated that there have been 11 incidents confirmed related to the spate of bullets or projectiles hitting cars and trucks as they travel along I-10.

I-10 INCIDENTS: Timeline, map of events

"I know somebody knows something and I'm willing to pay for that information," Milstead said before announcing the increased reward.

The last confirmed related shooting happened on Thursday, Milstead said during the update. "All I know is that it has stopped for now. I don't know why and I want to know why," he said.

While DPS was adamant this case is not solved there is a chance a shooter is in custody. DPS arrested Oscar de la Torre Munoz last Friday after pulling him over. When troopers searched his home they found a gun, bullets and marijuana.

"We have not completed our investigation on him," Milstead said.

PERSON OF INTEREST: DPS: man arrested Friday not "prime suspect"

Officially Munoz is considered a "person of interest" in the shootings.

Munoz was on probation when troopers pulled him and his mother over on Friday. Troopers released his mom but detained and later arrested Munoz. The 19-year-old was on probation for speeding. DPS says the teen was seen doing 140 on the freeway back in May. Munoz was put on unsupervised probation for that incident.

PHOTOS: I-10 shootings

In a strange twist, Munoz was actually in court the day before his recent arrest for sentencing in a speeding incident. Munoz pleaded guilty to a charge of "endangerment" which is a class 6 felony.

CITIZEN GROUP: The Bolt Force hunting for I-10 shooter

DPS would give few details when asked if it was awaiting ballistic or forensic evidence on Munoz.

"I will tell you quite candidly that we have not solved this case," Milstead admitted during Monday's briefing.

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