SEATTLE -- Local authorities are reminding parents to baby-proof their windows in the wake of two window-related accidents in just one week.

On Monday two kids fell from a second-story window of their Lacey home. Investigators say the kids were playing too close to a window and fell when the screen gave way. The 5 year old and 3 year old survived and were taken to Mary Bridge Children's Hospital.

"Accidents happen, and we're very grateful and blessed that it wasn't worse than it was," said neighbor Desi Egger.

Just three days prior on Saturday, a toddler plunged from a second-story apartment window to the ground 20 feet below.

The toddler's father, Chris Ruffin, told KOMO News that he left the room where 21-month-old Chris Ruffin Jr. was playing for only a minute or two.

When he returned to the room, he saw that the screen was pushed out of the window and realized the youngster had somehow unlatched the screen and plunged to the ground. Amazingly, medics found the 21-month-old boy in relatively good shape with just a minor knee injury.

But officials know not every accident ends this way and they're urging parents to prevent window-related accidents, which can happen in a matter of seconds.

"Young children need to be supervised," said Lt. Mack with the Lacey Police Department. "Your screen should probably be on your windows, and if you have chairs or items where they can climb up on, you really need to pay attention, so the kids don't fall out the window."

With the weather getting warmer and more people opening their windows, officials are warning parents to invest in child-proof locks for windows.

More information:

How to baby-proof your home

Baby-proofing guide

Mom's 20 best baby-proofing tips