OAKLAND -- City leaders were again voicing their outrage Tuesday after two toddlers and two adults were wounded by gunfire in separate shooting incidents Monday evening.

A 2-year-old boy and his 21-year-old mother were wounded by gunfire Monday night when armed men broke into an East Oakland home and began shooting.

Authorities said the shooting was not connected to a gunbattle about five hours earlier and two miles away that injured a 3-year-old and a man.

The 2-year-old and his mother were visiting people in the 900 block of 83rd Avenue and were on a couch in the front room watching television about 10 p.m. Monday when several men forced their way inside and at least one began shooting at them, according to police.

A memorial for Emiliano Zapata Street Academy student Samantha Alvarado, 15, is seen during a press conference on 83rd Avenue and A Street in East Oakland,
A memorial for Emiliano Zapata Street Academy student Samantha Alvarado, 15, is seen during a press conference on 83rd Avenue and A Street in East Oakland, Calif., on Tuesday, June 10, 2014. Alvarado was shot killed on 83rd Avenue and A Street and two men were wounded on Saturday night. In another incident, at 11:51 p.m. Saturday, 20-year-old Maceo Bell was shot in front of his home in the 1900 block of 48th Avenue. In a third shooting, two suspects were arrested after a 2-year-old boy and his 21-year-old mother were wounded by gunfire Monday night in the 900 block of 83rd Avenue. (Jane Tyska/Bay Area News Group) ( JANE TYSKA )

The boy was hit in the shoulder and his mother in the stomach and leg. They were taken to local hospitals, and both were in stable condition and expected to recover, police said.

Police said the home was targeted following a personal dispute. The victims live in Oakland, although their names were not released. People who were in another part of the home were not injured.

Officer Brodie Rivera said police later arrested two men, one 19 and the other 23, in the 1000 block of 83rd Avenue in connection with the shooting. Police did not release their names Tuesday.

Authorities said the shooting was not connected to an earlier gunbattle around 5:11 p.m. Monday that grazed a 3-year-old in the foot and left a man wounded in the shoulder.

In that incident, a 3-year-old boy and his mother, who live in Oakland, were waiting for a bus in the 6500 block of International Boulevard when a gunbattle erupted between groups of people. Police have not determined yet if shots were fired between people in cars or if someone in a car exchanged shots with people on the street.

The 3-year-old was grazed in the foot by a bullet that passed through his shoe. He and his mother did not know it at the time and boarded an AC Transit bus, but a few blocks away they realized the boy had been wounded; the bus was stopped and police summoned. The boy was treated at a hospital and released.

A 22-year-old man was also wounded in the shoulder by the gunfire. He told police he had been looking at his cellphone when he was hit and said he did not see what happened.

He was treated and released but was arrested on an unrelated outstanding warrant. Police said Tuesday afternoon that they had arrested one other suspect in that shooting, but they did not identify him.

The shootings prompted calls by Oakland police Chief Sean Whent and Mayor Jean Quan for residents to report illegal weapons and to speak to their children about the dangers of gun violence.

"Our children should be free to live and thrive," Whent said at a news conference Tuesday afternoon.

Quan also addressed criminals, saying that their "callous disregard" for children caught in the crossfires of violence would not be tolerated.

Police are still seeking additional suspects in both incidents and are offering up to $15,000 in reward money for information leading to the arrests of suspects. Anyone with information may call police at 510-238-3326 or Crime Stoppers at 510-777-8572.