WASHINGTON – One child died and four others suffered serious injuries after swallowing tiny magnets found in building sets sold nationwide, the Consumer Product Safety Commission said Thursday in announcing a recall of 3.8 million of the toy kits.

The commission said it has received reports of 34 incidents involving the small magnets included in the Magnetix magnetic building sets, including the X-treme Combo, Micro and Extreme versions.

A 20-month-old boy died after he swallowed magnets that twisted his small intestine and created a blockage, federal officials said. Three other children, between the ages of 3 and 8, suffered intestinal perforations that required surgery and hospitalization in intensive care.