RALEIGH, North Carolina — Two people were arrested Thursday as part of an investigation into shootings at eight vehicles and multiple homes that left one person injured in the Raleigh area this week, the city’s police chief said.

Several people reported shots fired on a stretch of Interstate 40 in Raleigh and Cary around 5 a.m. during the morning rush hour Wednesday, according to Raleigh police.

A total of 12 shootings have been reported in southwest Wake County since Monday and authorities believe they are related, Raleigh Police Chief Estella Patterson said during a news conference Thursday . Authorities said eight vehicles were struck: two on Monday, four on Wednesday and two on Thursday. A police news release also says four additional shootings hit residences Wednesday.

Patterson did not discuss possible charges nor did he name those detained. Police officials said one of them was considered a person of interest and the other was associated with the home where the person of interest was found.

“We’re going to continue to follow this lead and any other leads we have,” Patterson said.

WRAL-TV reported that two dozen law enforcement officers, guns drawn, approached a home in Raleigh and took two people out in handcuffs.

Of the 12 reported shootings, there was one injury, she said. Early Monday morning, a woman was shot in the leg while traveling on I-40, police said.

Police say they do not believe the shootings were caused by road rage. The shooter is suspected of using a handgun, authorities said. An investigation is underway to determine whether the suspect was on foot or in a vehicle during the shooting.