The Texas Department of Public Safety has notified the North Texas Tollway Authority that it will not renew an agreement dedicating state troopers to patrol NTTA roadways after the deal expires at the end of August.

NTTA oversees more than 150 miles of roads, bridges, and tunnels across North Texas, including the Dallas North Tollway, President George Bush Turnpike and Sam Rayburn Tollway.

DPS Col. Freeman Martin told NTTA CEO James Hofmann in a June 1 letter that a “comprehensive assessment of our statewide operational requirements” led the agency to forgo renewal. Martin wrote that DPS must preserve the flexibility to deploy personnel and resources in response to an “ever-changing threat environment.”

“The structure of the current agreement limits that flexibility in ways not aligned with DPS’s statewide operational needs,” Martin said in the letter reviewed by The Dallas Morning News.

Read more from our media partners, The Dallas Morning News.

Mosquito samples in Dallas and Carrollton tested positive for West Nile Virus. Here is what that means for public health.

Dallas County Health & Human Services put out a bulletin with the information on Monday. According to the bulletin, the Dallas pool is located in zip code 75215 and the Carrollton pool is located in zip code 75006.

The city put out a second press release on Monday announcing that it had scheduled mosquito control spraying sessions on June 9-10 in council districts 7 and 14.

The spraying will take place between 9 p.m.-5 a.m. each night.

The first control area to be sprayed is within an area generally bounded by 2300 Martin Luther King, Jr. Blvd.; S. Malcolm X Blvd. on the north; Coombs St. on the west; Dathe St. on the east; and Cleveland St. on the south.

The second control area to be sprayed is within an area generally bounded by 5300 Vickery Blvd.; Morningside Ave. on the north; N. Central Expressway on the west; Worcola St. on the east; and N. Garrett Ave. on the south.

It’s important to remember that while the United States Environmental Protection Agency approves this insecticide for treatment, residents in the above areas should avoid contact with the spray by staying indoors.

Anyone inside a vehicle while the trucks are actively spraying should remain in them with the windows up and the air conditioner on until the trucks pass through and the spray is no longer visible.

Additionally, Dallas residents are encouraged to take precautions against mosquito bites by reducing outdoor activity during the evening and nighttime hours.

After several days of testimony, the defense has rested in the Frisco track meet stabbing trial, leaving the verdict in the hands of the jury. FOX 4’s Lori Brown has more on the Karmelo Anthony trial.