SAN JOSE -- Daytime gunfire claimed the life of one man and left another in the hospital with life-threatening wounds, and a woman was stabbed to death on a busy San Jose street on an unusually violent Monday.

The first of the apparently unrelated pair of brazen shootings in broad daylight happened around 1:39 p.m., when officers responded to a call of multiple shots fired near Charles Street and Oakland Road in North San Jose, according to police spokesman Sgt. Jason Dwyer. They found a white Impala parked on Charles Street just off Oakland Road with a man in his late 30s to early 40s slumped over in the driver's seat. He had been shot once.

The man was pronounced dead at the scene, Dwyer said.

No arrests have been made and a motive was not known.

Later that evening, police were called to West San Carlos Street near Meridian Avenue around 6:30 p.m. to find a woman on the sidewalk suffering from at least one stab wound, police said. She was pronounced dead at the scene.

A short-bladed samurai sword could be seen on the ground next to her covered body, along with a walker.

Ruth White, who works at a coffee shop across the street from where the stabbing occurred, said the victim was a well-known homeless woman who was a fixture in the area.

"If you live in this neighborhood, you know who she is," White said.

White said the woman had been in an altercation with a customer at the coffee shop earlier in the day.

No arrest was made, and the motive and circumstances behind the stabbing were under investigation, police said.

In another incident, a second man was struck by gunfire in a drive-by shooting on a residential street about 5 miles away from the first homicide.

Police said they received word about the second shooting shortly after 4 p.m. and found a man had been struck by at least one bullet in the 2300 block of Denair Avenue, near Tully Road and Highway 101.

"He was standing in front of a house, a vehicle drove by and someone fired several rounds," Dwyer said.

The victim was taken to a hospital with life-threatening wounds, police said. The motive remains under investigation, and no arrests have been made.

Dwyer said daytime shootings are uncommon.

"For someone to do that, they've got to be extremely violent and indifferent to the fact that they are being seen," he said.

Dwyer said they are "exploring the possibility" that the drive-by was gang-related. There have been nine gang-related slayings in San Jose this year, Dwyer said.

Monday's victims were the 25th and 26th homicides of the year. At this time last year, there were also 26 slayings, police said.

Dwyer said it does not appear that the shootings are connected.

Anyone with information about the homicides is asked to call the San Jose police homicide unit at 408-277-5283.