BOSTON -- Boston police said they are investigating who should have been taking care of four young boys who were found left alone in a Dorchester home after one of them was found wandering the streets about 2:30 a.m. Monday.

The child was found on Richfield Street and led authorities to his house at 26 Richfield, where investigators found three more young boys. The oldest boy is 6 years old, and the other three range in age from 4 to 2.

NewsCenter 5's Mary Saladna reported that Maggie Rodriguez, 25, said her 6-year-old and 4-year-old sons, along with a friend's two young boys, were left alone for about 25 to 30 minutes when the two women went to a gas station to buy cigarettes.

Rodriguez said the boys were asleep when they left, but her 4-year-old son apparently woke up, went out on the front porch and got locked out.

On Monday, Rodriguez was asked how the children were doing.

"(They're) good. Thanks to God," she said.

Rodriguez said the Department of Social Services gave temporary custody of her sons to the children's aunt. DSS has taken temporary custody of the other woman's children while they investigate the incident.

"I'm surprised because I know the family very well," neighbor Annette Cummings said.

The incident follows a big party at Rodriguez's building on Sunday. Neighbors said close to 200 people were hanging out in the back yard until after 11 p.m. Rodriguez did attend the party.

The children were taken to Boston Medical Center as a routine procedure and for evaluation.