A gunman acted alone when he shot and wounded a top House Republican and four other people on a northern Virginia baseball field, the FBI said Wednesday.

Tim Slater, the special agent in charge of the Washington FBI office, also said during a news conference that James T. Hodgkinson did not have any ties to terrorism.

Officials also said that Hodgkinson had kept a storage locker in Alexandria, Virginia, that contained more than 200 rounds of ammunition, a laptop computer and a receipt for a gun purchased in November 2016.

Investigators said that Hodgkinson visited the storage locker 43 times between April and June, usually between 6am and 7am. They said he visited the locker less than an hour before he fired more than 60 rounds in the shooting that gravely wounded Rep. Steve Scalise, the House Majority Whip and four others.

Authorities also found a list with the names of six members of Congress, but the FBI said authorities were not characterizing it as a 'hit list'.

Scroll down for video

Gunman James T. Hodgkinson (above in a previous mugshot) was shot by police and died in hospital. The FBI said Wednesday he acted alone in last week's shooting where he shot and wounded Rep. Steve Scalise and four others at a baseball field in Virginia

House Majority Whip Steve Scalise was shot in the hip and had to be airlifted to hospital. He remains hospitalized and his condition has been upgraded to serious after undergoing several surgeries

Scalise has undergone several surgeries and remains hospitalized. His condition has been upgraded to serious.

The congressman and other congressional Republicans were practicing for their annual charity baseball game against Democrats when a gunman started shooting.

U.S. Capitol Police and other officers returned fire and killed the gunman, who turned out to be an unemployed home inspector with a deep animus toward President Donald Trump and other Republicans.

Hodgkinson, 66, had volunteered for Bernie Sanders' presidential campaign.

A female police officer with less than two years' experience withstood a barrage of gunfire from the gunman.

Hodgkinson (pictured left and right, campaigning against Republicans in 2012) was a hateful Trump opponent who had threatened to 'destroy' the president on social media

Alexandria Police Chief Michael Brown lauded the heroic actions of officer Nicole Battaglia and two other officers who were the first to arrive at a field where GOP congressmen were practicing for the game.

Officers were first dispatched to the scene at 7.10am last Wednesday, Brown said, and officer Kevin Jobe, a 16-year Alexandria police veteran, arrived less than two minutes later.

Battaglia and another officer, Alexander Jensen, arrived around the same time.

The baseball field and adjoining YMCA where the shocking incident happened reopened on Monday still bearing the symbols of the horrifying attack.

The metal caging which surrounds Eugene Simpson Stadium Park in Alexandria, Virginia, is pierced with bullet holes after last week's shooting. The park reopened on Monday less than a week after the attack

The windows of the YMCA next to the field have been boarded up with wood until they are replaced. This is where gunman James T. Hodgkinson whiled away time as he plotted the shooting

Bullet holes pierce the metal fence poles which surround the Eugene Simpson Stadium Park in Alexandria where the team was practicing last Wednesday.

The shed which Hodgkinson hid behind as he fired round after round was also damaged by a bullet from the pistol of one of two hero Capitol Police officers who returned fire on him while the politicians dove for cover.

The YMCA, which the 66-year-old frequented in the weeks before the attack, also reopened.

Two of its windows were smashed by bullets and have been boarded up with wood until they are replaced.